Now-a-days the field of Remote Sensing and GIS has become exciting and glamorous with rapidly expanding opportunities. Many organizations spend large amounts of money on these fields. Here the question arises why these fields are so important in recent years. Two main reasons are there behind this. 1) Now-a-days scientists, researchers, students, and even common people are showing great interest for better understanding of our environment. By environment we mean the geographic space of their study area and the events that take place there. In other words, we have come to realize that geographic space along with the data describing it, is part of our everyday world; almost every decision we take is influenced or dictated by some fact of geography. 2) Advancement in sophisticated space technology (which can provide large volume of spatial data), along with declining costs of computer hardware and software (which can handle these data) has made Remote Sensing and G.I.S. affordable to not only complex environmental / spatial situation but also affordable to an increasingly wider audience.
Now-a-days the field of Remote Sensing and GIS has become exciting and glamorous with rapidly expanding opportunities. Many organizations spend large amounts of money on these fields. Here the question arises why these fields are so important in recent years. Two main reasons are there behind this. 1) Now-a-days scientists, researchers, students, and even common people are showing great interest for better understanding of our environment. By environment we mean the geographic space of their study area and the events that take place there. In other words, we have come to realize that geographic space along with the data describing it, is part of our everyday world; almost every decision we take is influenced or dictated by some fact of geography. 2) Advancement in sophisticated space technology (which can provide large volume of spatial data), along with declining costs of computer hardware and software (which can handle these data) has made Remote Sensing and G.I.S. affordable to not only complex environmental / spatial situation but also affordable to an increasingly wider audience.
“A ˈnoˈ uttered from deepest conviction is better and greater than a ˈyesˈ merely uttered to please, or what is worse, to avoid trouble. You must be the change you wish to see in the world . . .”
– Mahatma Gandhi
“Governance and leadership are the yin and the yang of successful organizations. If you have leadership without governance you risk tyranny, fraud and personal fiefdoms. If you have governance without leadership you risk atrophy, bureaucracy and indifference.” – Mark Goyder, Tomorrow’s Company
“Do your little bit of good where you are; its those little bits of good put together that overwhelm the world.” – Desmond Tutu
The Visual Framing of the Three Cycles of Climate Control in The New York Tim...Jason Lee Thompson
This research explored the visual framing of climate control in The New York Times
through three cycles of media history. Although no peer-reviewed study has explored this
specific topic, a wealth of prior communication articles on both the visual and textual aspects of
climate change and geoengineering in the media was mined in order to discover the frames
present. Once the visual frames of climate control (war, fix, people, and impacts) were revealed a
content analysis was conducted in order to see which frame elements were most and least
frequent considering the images of climate control. When combining all three cycles the frame
with the highest overall mean was the fix frame (M=1.7517, SD=1.34128) indicating that it is the
most occurring climate control frame per image. The frame with the lowest overall mean was the
war frame (M=.5137, SD=1.02544). Frame frequency from cycle to cycle was relatively constant
since only the impacts frame had a significant mean difference between cycle one and cycle two
(M= .72453, p= .042). This initial analysis did not provide support for Downs issue-attention
cycle theory. Although when the frame element frequencies were graphed three spikes were
separated by three valleys considering climate control imagery in The New York Times through
iv
about one and half centuries. This information can go towards making correlations with: events,
exposure to certain stimuli, and judging effectiveness of communication strategies over time.
The discussion considered whether currently the war and fix frames could be too small in order
to produce effective communication with a distrustful public. Also the recent people frame
increase correlates with non-acceptance regarding climate change considering Republicans.
Asteroids, Black Swans, Global Catastrophic Risks, and How to Save Civilization (cloudy night version) -- JCCC Science Center "Evening with the Stars" lecture, given Saturday 24 October 2009. Created by Jay Manifold, board member of the Astronomical Society of Kansas City.
“A ˈnoˈ uttered from deepest conviction is better and greater than a ˈyesˈ merely uttered to please, or what is worse, to avoid trouble. You must be the change you wish to see in the world . . .”
– Mahatma Gandhi
“Governance and leadership are the yin and the yang of successful organizations. If you have leadership without governance you risk tyranny, fraud and personal fiefdoms. If you have governance without leadership you risk atrophy, bureaucracy and indifference.” – Mark Goyder, Tomorrow’s Company
“Do your little bit of good where you are; its those little bits of good put together that overwhelm the world.” – Desmond Tutu
The Visual Framing of the Three Cycles of Climate Control in The New York Tim...Jason Lee Thompson
This research explored the visual framing of climate control in The New York Times
through three cycles of media history. Although no peer-reviewed study has explored this
specific topic, a wealth of prior communication articles on both the visual and textual aspects of
climate change and geoengineering in the media was mined in order to discover the frames
present. Once the visual frames of climate control (war, fix, people, and impacts) were revealed a
content analysis was conducted in order to see which frame elements were most and least
frequent considering the images of climate control. When combining all three cycles the frame
with the highest overall mean was the fix frame (M=1.7517, SD=1.34128) indicating that it is the
most occurring climate control frame per image. The frame with the lowest overall mean was the
war frame (M=.5137, SD=1.02544). Frame frequency from cycle to cycle was relatively constant
since only the impacts frame had a significant mean difference between cycle one and cycle two
(M= .72453, p= .042). This initial analysis did not provide support for Downs issue-attention
cycle theory. Although when the frame element frequencies were graphed three spikes were
separated by three valleys considering climate control imagery in The New York Times through
iv
about one and half centuries. This information can go towards making correlations with: events,
exposure to certain stimuli, and judging effectiveness of communication strategies over time.
The discussion considered whether currently the war and fix frames could be too small in order
to produce effective communication with a distrustful public. Also the recent people frame
increase correlates with non-acceptance regarding climate change considering Republicans.
Asteroids, Black Swans, Global Catastrophic Risks, and How to Save Civilization (cloudy night version) -- JCCC Science Center "Evening with the Stars" lecture, given Saturday 24 October 2009. Created by Jay Manifold, board member of the Astronomical Society of Kansas City.
Using Technology in the Geography ClassroomEduwebinar
eduwebinar.com.au | Technology and Geography go hand in hand: with a great range of apps available, Jessica has worked with students from Years 7 -10 integrating the use of technology into the Geography curriculum. This webinar presentation explored some key applications for use in the Geography classroom and how they can be applied for greater student engagement in learning. Applicants will be able to see examples of how apps are used and adapt activities to their chosen year level.
Treaty on Principles Governing the Activities of States in the Exploration and Use of Outer Space, including the Moon and other Celestial Bodies
Presentation by Justin Ordoyo
University of the Philippines College of Law
Life, the Universe, andSETI in a NutshellSérgio Sacani
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Ua mau ke ea o ka `aina i ka pono - The life of the land is preserved in righteousness - Motto of Hawai`i.
`Onipa`a - Stand firm - Queen Lili`uokalani
He kehau ho`oma`ema`e ke aloha - Love is like a cleansing dew
The cleansing power of aloha can soothe and heal. Hurt, pain, and suffering yield to aloha's healing power - Mary Kawena Pukui
urrent and Prospective Radiation Detection Systems, Screening Infrastructure and Interpretive Algorithms for the Non-Intrusive Screening of Shipping Container Cargo: A Review
Simulation of the Earth’s radio-leakage from mobile towers as seen from selec...Sérgio Sacani
Mobile communication towers represent a relatively new but growing contributor to the total radio leakage associated with
planet Earth. We investigate the overall power contribution of mobile communication towers to the Earth’s radio leakage budget,
as seen from a selection of different nearby stellar systems. We created a model of this leakage using publicly available data of
mobile tower locations. The model grids the surface of the planet into small, computationally manageable regions, assuming
a simple integrated transmission pattern for the mobile antennas. In this model, these mobile tower regions rise and set as the
Earth rotates. In this way, a dynamic power spectrum of the Earth was determined, summed over all cellular frequency bands.
We calculated this dynamic power spectrum from three different viewing points - HD 95735, Barnard’s star, and Alpha Centauri
A. Our preliminary results demonstrate that the peak power leaking into space from mobile towers is ∼ 4GW. This is associated
with LTE mobile tower technology emanating from the East Coast of China as viewed from HD 95735. We demonstrate that
the mobile tower leakage is periodic, direction dependent, and could not currently be detected by a nearby civilisation located
within 10 light years of the Earth, using instrumentation with a sensitivity similar to the Green Bank Telescope (GBT). We plan
to extend our model to include more powerful 5G mobile systems, radar installations, ground based up-links (including the Deep
Space Network), and various types of satellite services, including low-Earth orbit constellations such as Starlink and OneWeb.
Options and uncertainties in planetary defense: Mission planning and vehicle ...Sérgio Sacani
This paper is part of an integrated study by NASA and the NNSA to quantitatively understand the response timeframe should a threatening Earth-impacting near-Earth
object (NEO) be identified. The two realistic responses considered are the use of a spacecraft functioning as either a kinetic impactor or a nuclear explosive carrier to
deflect the approaching NEO. The choice depends on the NEO size and mass, the available response time prior to Earth impact, and the various uncertainties.
Whenever practical, the kinetic impactor is the preferred approach, but various factors, such as large uncertainties or short available response time, reduce the kinetic
impactor's suitability and, ultimately, eliminate its sufficiency.
Herein we examine response time and the activities that occur between the time when an NEO is recognized as being a sufficient threat to require a deflection and
the time when the deflection impulse is applied to the NEO. To use a kinetic impactor for successful deflection of an NEO, it is essential to minimize the reaction time
and maximize the time available for the impulse delivered to the NEO by the kinetic impactor to integrate forward in time to the eventual deflection of the NEO away
from Earth impact.
To shorten the response time, we develop tools to survey the profile of needed spacecraft launches and the possible mission payloads. We further present a vehicle
design capable of either serving as a kinetic impactor, or, if the need arises, serving as a system to transport a nuclear explosive to the NEO. These results are generated
by analyzing a specific case study in which the simulated Earth-impacting NEO is modeled very closely after the real NEO known as 101955 Bennu (1999 RQ36). Bennu
was selected for our case study in part because it is the best-studied of the known NEOs. It is also the destination of NASA's OSIRIS-REx sample return mission, which
is, at the time of this writing, enroute to Bennu following a September 2016 launch.
Private, non-governmental actors are becoming increasingly active in space activities, driving innovation and expanding our capabilities. However, their ambitions have implications for international and national governance regimes. This lecture was given at the Geneva Centre for Security Policy's 2019 Geopolitics and Global Futures Symposium
Deficiencies and Pressing Issues in the Existing Legal Regime of Outer SpaceChristopher Johnson
It is increasingly clear that the body of international space law, drafted in the 1960s and 70s (and showing the hallmarks of that era), has a number of deficiencies in relation to existing, emerging, and proposed space activities. These deficiencies include both intended deficiencies in the law—where the drafters refrained from lawmaking (either out of modesty or political expediency); as well as unintended and emergent deficiencies (where technological progress in spaceflight technologies and capabilities were not addressed in the law because they were simply not imagined at the time).
This was a talk I gave at CU Boulder SEDs in Nov 2011 to showcase the variety and opportunities for student-run science and engineering experiments on suborbital platforms. The area of suborbital space is rapidly expanding and is set to change how we expand our use of technology for future science and exploration space missions.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.
Delivering Micro-Credentials in Technical and Vocational Education and TrainingAG2 Design
Explore how micro-credentials are transforming Technical and Vocational Education and Training (TVET) with this comprehensive slide deck. Discover what micro-credentials are, their importance in TVET, the advantages they offer, and the insights from industry experts. Additionally, learn about the top software applications available for creating and managing micro-credentials. This presentation also includes valuable resources and a discussion on the future of these specialised certifications.
For more detailed information on delivering micro-credentials in TVET, visit this https://tvettrainer.com/delivering-micro-credentials-in-tvet/
Executive Directors Chat Leveraging AI for Diversity, Equity, and InclusionTechSoup
Let’s explore the intersection of technology and equity in the final session of our DEI series. Discover how AI tools, like ChatGPT, can be used to support and enhance your nonprofit's DEI initiatives. Participants will gain insights into practical AI applications and get tips for leveraging technology to advance their DEI goals.
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
How to Add Chatter in the odoo 17 ERP ModuleCeline George
In Odoo, the chatter is like a chat tool that helps you work together on records. You can leave notes and track things, making it easier to talk with your team and partners. Inside chatter, all communication history, activity, and changes will be displayed.
Safalta Digital marketing institute in Noida, provide complete applications that encompass a huge range of virtual advertising and marketing additives, which includes search engine optimization, virtual communication advertising, pay-per-click on marketing, content material advertising, internet analytics, and greater. These university courses are designed for students who possess a comprehensive understanding of virtual marketing strategies and attributes.Safalta Digital Marketing Institute in Noida is a first choice for young individuals or students who are looking to start their careers in the field of digital advertising. The institute gives specialized courses designed and certification.
for beginners, providing thorough training in areas such as SEO, digital communication marketing, and PPC training in Noida. After finishing the program, students receive the certifications recognised by top different universitie, setting a strong foundation for a successful career in digital marketing.
This presentation includes basic of PCOS their pathology and treatment and also Ayurveda correlation of PCOS and Ayurvedic line of treatment mentioned in classics.
Normal Labour/ Stages of Labour/ Mechanism of LabourWasim Ak
Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
1. Security in Space
Luciano Anselmo
Space Flight Dynamics Laboratory
ISTI/CNR – Pisa – Italy
INTERNATIONAL WORKSHOP ON PAOLO FARINELLA (1953-2000):
THE SCIENTIST AND THE MAN
Dipartimento di Matematica, Università di Pisa, 14-16 June 2010
2. Introduction
Paolo Farinella devoted a considerable amount of his time and energies to
the political, military and social implications of space activities and
research.
Most of these interests may be collectively included under the expression
“security in space”.
The aim of this presentation is roughly reviewing some of the Paolo’s
contributions in the field (in cooperation with Bruno Bertotti and myself).
Paolo shared our view of the growing strategic importance of space assets
and recognized the positive and stabilizing role, in the context of the arms
race between the two superpowers, of the so-called “national technical
means of verification”, i.e. “spy satellites”.
But he was also a staunch defender of the outer space preservation for
future generations, endorsing the ban of destabilizing orbital arms systems,
as space-based bombardment vehicles, anti-satellite weapons and the “star
wars” anti-missile battle stations envisaged in the US in the 1980’s.
He recognized that space activities, both in the military and in the civilian
areas, might become dangerous.
3. The danger of space activities
There are several circumstances in which space activities may cause
significant threats to the security of both nations and people.
Well known examples are anti-satellite weapons, space vehicles carrying
radioactive material on board, uncontrolled reentering space objects, and
explosions or collisions in space generating swarms of orbiting debris.
If dangerous activities were to be carried out by a nation in a region which
is “common property of mankind”, the adoption of constraints, regulations
and monitoring appeared necessary to safeguard the interests of other
parties.
Paolo shared the view that, in this area, an internationally agreed regime
would be by far superior to purely unilateral moves.
He was also convinced that establishing an international system for space
surveillance and verification would present significant advantages with
respect to the proliferation of “national technical means”.
4. Outer space surveillance
The monitoring of space activities is today carried out effectively and
systematically only by the US and Russia (plus a more limited capability by
France).
In 1991 we proposed (Space Policy, August 1991, pp. 184-198) to remediate
this situation by developing international means of surveillance of space
activities.
Different scenarios for the establishment of an International Agency for
Space Surveillance (lASS) were considered and an attempt was made to
assess the main political hindrances to its effective functioning.
We also discussed a minimum set of requirements for the lASS, assuming
that only current technology was used and that no attempt was made to
systematically track all low-orbiting objects.
The components of the agency, the required tracking systems and their
performance were analyzed.
The achievable accuracy of orbit determination from tracking data was
estimated by performing a suitable set of computer simulations.
5. Recent developments 1
France deployed its own space surveillance system (GRAVES).
Other countries acquired limited space surveillance capabilities.
ESA funded some studies of a European space surveillance system.
ESA launched the Space Situational Awareness (SSA) program to protect
Europe's citizens and satellite-based services by detecting space hazards.
At the 52nd session of UN COPUOS, the Member States of the Inter-
Agency Space Debris Coordination Committee (IADC) were invited to
prompt IADC to advise the Scientific and Technical Subcommittee on a
proposal by the delegations of Germany and Italy.
The task was “to develop first ideas on concrete measures with the
purpose of making available already existing sources of information as well
as data and information on objects in outer space for the promotion of a
safe and sustainable development of the peaceful uses of outer space”.
The stated objective of the joint proposal was “to avoid collisions in outer
space between operational spacecraft and space debris and other
operational spacecraft respectively, as well as to protect the Earth’s
population in case of reentering debris”.
6. Recent developments II
After two decades of international moratorium, in January 2007 China
carried out a successful ASAT test, producing about 3,000 cataloged debris
in the most crowded region of the circumterrestrial space.
In February 2008, the US destroyed an uncontrolled and potentially
hazardous satellite a couple of weeks before reentry (no cataloged debris
left in orbit after a few months).
In February 2009, two satellites collided in low and nearly polar orbits,
generating about 2,000 cataloged debris.
The Chinese ASAT test and the satellite collision, combined, have increased
the number of trackable objects in low Earth orbit by over 60%.
Following the satellite crash, the Joint Space Operations Center (JSpOC)
of the US Strategic Command now conducts conjunction assessments for
all operational spacecraft in Earth orbit, regardless of ownership or
nationality.
In May 2010, General James Cartwright, vice chairman of the Joint Chiefs
of Staff, said it was no longer possible for the US and other countries to
keep vast numbers of orbiting satellites a secret.
7. Nuclear power in space
Concerning specifically the use of nuclear power in space, widespread
concerns prompted the UN General Assembly, in 1992, to approve a
resolution establishing criteria for a safe use of such capability.
However, these criteria were restricted to non-propulsive systems and to
current types of technologies and missions.
We believed that while a comprehensive ban on space nuclear systems in
general appeared neither feasible nor desirable, additional “rules of the
road” were needed to address current and future safety concerns.
In such a context, it appeared important to make a clear distinction
between nuclear systems operating permanently in low Earth orbit and
systems launched from, or assembled near, the Earth, but intended to
operate in deep interplanetary space.
While the former systems should be forbidden, up to a maximum height
taking into account the collision hazard with orbital debris, the latter ones
might be allowed, provided suitable safety measures or devices were put in
place.
8. The regulation of nuclear systems
We addressed the question in a series of initiatives and papers during the
1990’s.
Several reasons have been put forward supporting a ban on the operation
of nuclear power systems in Earth orbit:
◦ No near-term civilian applications are envisaged;
◦ The highly radioactive core of activated nuclear reactors, as well as the
toxicity of the plutonium used in the radioisotope thermoelectric
generators, represent a potential hazard for the Earth environment in case
of accidental reentry into the atmosphere;
◦ The collision of a small piece of artificial debris with a space nuclear power
system could generate a cloud of radioactive fragments, soon dispersed by
the perturbations over a large volume of space;
◦ The radiation (gamma rays and positrons) emitted by unshielded nuclear
reactors in Earth orbit may "blind" the instruments of space observatories
devoted to research in gamma-ray astronomy, disrupting the study of this
unique window over the most violent phenomena occurring in the universe;
◦ The possible military use of nuclear power systems in Earth orbit could
stimulate an arms race.
9. The 1992 UN Resolution
On 1992, the General Assembly of the United Nations approved a
Resolution ("Principles Relevant to the Use of Nuclear Power Sources in
Outer Space") establishing guidelines and criteria for a safer use of nuclear
power sources in space.
The set of principles endorsed "applies to nuclear power sources in outer
space devoted to the generation of electric power on board space objects
for non-propulsive purposes".
This Resolution was important, because filled a gap in the international law
on a critical topic.
It addressed nuclear power sources having "characteristics generally
comparable to those of systems used and mission performed at the time
of the adoption of the Principles."
However, much more capable systems could be developed in the future
and the use of nuclear devices for propulsion is recommended for some
new space missions.
10. The additional rules proposed
Some additional rules could be needed to lessen the safety concerns while
taking into account the difference between a nuclear power system
operating in a low Earth orbit and a system launched or assembled near
the Earth to operate in interplanetary space or far enough from the Earth.
In our opinion possible measures to be considered included the following:
◦ No nuclear power system should be operated in low Earth orbit (maximum
height to be defined): in this region of space only the transit of spacecraft
carrying nuclear systems will be permitted;
◦ Spacecraft carrying on board nuclear power systems could be assembled in
low Earth orbit, provided that their final destinations lie outside the
forbidden region and an accidental release of radioactive material in the
Earth environment could be prevented by safety mechanisms or
procedures;
◦ The orbits available for an extended stay and operation of space nuclear
systems should lie at such altitudes that the interference with experiments
dealing with gamma-ray astronomy would be reduced below a threshold to
be fixed;
◦ Nuclear devices used for propulsion might be activated in low Earth orbit,
only provided that the transit time is maintained below a given ceiling and
safety devices are in place to avoid the accidental contamination of the
environment.
11. The situation
We presented The Regulation of Nuclear Power Systems in Near-Earth Space
as a CBM Aimed at Strengthening International Security, Intervention in the ad
hoc Committee on the Prevention of an Arms Race in Outer Space,
Geneva Conference on Disarmament, 8 June 1993.
The last launch of a nuclear reactor in Earth orbit occurred in 1988, the
year of the Cosmos 1900 emergency (there is a de facto moratorium).
In the early morning of 18 November 1996, due to a malfunctioning upper
stage, the Russian Mars 96 probe reentered over the Pacific Ocean,
carrying on board 6 radioisotope generators to produce electricity plus 10
for thermal control, corresponding to a total of about 300 g of plutonium
238 dioxide.
No pollution of the environment by radioactive material took place.
On 15 October 1997, the Cassini probe, equipped with radioisotope
thermoelectric generators, was successfully launched towards Saturn with
about 33 kg of plutonium 238 dioxide.
At present only the launch of a few planetary probes equipped with
radioisotope generators is planned or seriously considered.
The debate concerning nuclear power systems in space is likely to
continue in the future, being just another instance of many such dilemmas
arising in assessing the risk/benefit ratio from complex technological and
scientific endeavors.
12. « Siamo venuti a conoscenza del Workshop che si terrà a Pisa in onore del
nostro comune amico Paolo Farinella. Grande, importante, doveroso
riconoscimento per Paolo! Siamo fieri e contenti di questa iniziativa.
Non passa occasione per noi del Gruppo Astronomico, di ricordarlo con
affetto e con un grande groppo che ci attanaglia la gola. Simpatia,
disponibilità, sono le prime parole che mi tornano alla mente pensando a
lui. Questo, senza considerare l'assoluto prestigio e competenza da lui
raggiunti in campo scientifico.
Le sarei grato se, ricordando la figura di Paolo, mettesse in rilievo l'importanza
che dava alla divulgazione e in particolare i consigli e suggerimenti che
dispensava a noi astrofili, nel tentativo di indirizzare la nostra passione alla
ricerca scientifica, nel termine reale di queste parole. Cioè non una
semplice attività ludico/ammirativa del cielo.
Tutti noi ricordiamo con nostalgia le cenette/conferenze che ci riservava dopo
le iniziative pubbliche, in cui era capace di farci sognare ad occhi aperti la
dinamica asteroidale, di farci vedere con la mente la dinamica degli impatti.
Con parole semplici, tra un boccone e l'altro, ci spiegava cose per noi
irraggiungibili, anche a causa dei nostri limiti culturali, con una chiarezza
semplicemente... illuminante!
Quando una persona se ne va così, lasciando un vuoto tangibile e persistente,
credo sia il segno della sua grandezza.
Grande Paolo! Un plauso commosso da tutti i soci del Gruppo Astronomico
Viareggio! »
Roberto Beltramini
Presidente del Gruppo Astronomico Viareggio
15 Aprile 2010