A supernova is a massive stellar explosion that occurs at the end of a large star's life. Supernovae can be dangerous to life on Earth if they occur close enough, releasing powerful cosmic radiation like gamma rays. Without supernovae dispersing elements throughout the universe, there would be no heavy elements like oxygen or iron, and thus no life as we know it.
stars life .. how they are formed ... supernova , what is black hole, worm hole ..... very very interesting topic in very simple language and many images that make u understand easily
stars life .. how they are formed ... supernova , what is black hole, worm hole ..... very very interesting topic in very simple language and many images that make u understand easily
Galaxy Forum Kansas 2013 - Tomas Armstrong - Are we there yetILOAHawaii
VOYAGER (Are We There Yet?) — We might be--according to Dr. Thomas Armstrong, NASA co-investigator on the Voyager project for its entire 35 years. In this update to last year's presentation, find out from Armstrong the latest information which leads many scientists to think Voyager I has entered interstellar space and what they are finding out.
This is all about comets. Their parts, their origin, and this also have The Top 10 Famous Comets. This also have the definition of the Kuiper Belt and the Oort Cloud. Have a Blast!!!
This presentation was a school project by me and my friends. It has information about almost everything in the solar system except for planets and stars
This is my first English project to complete my English Presentation. So, I think I’m not too good at English, I made it really simple because I was confuse what will I do.
Here, I try to learn about English. I apologize if I make any mistake. I’m really bad at English okay. But I will learn.
So this is tell us about supernova, and how supernova can be formed, type of supernova, and siclus of star. Thank you very much if you want to read this ^^
Galaxy Forum Kansas 2013 - Tomas Armstrong - Are we there yetILOAHawaii
VOYAGER (Are We There Yet?) — We might be--according to Dr. Thomas Armstrong, NASA co-investigator on the Voyager project for its entire 35 years. In this update to last year's presentation, find out from Armstrong the latest information which leads many scientists to think Voyager I has entered interstellar space and what they are finding out.
This is all about comets. Their parts, their origin, and this also have The Top 10 Famous Comets. This also have the definition of the Kuiper Belt and the Oort Cloud. Have a Blast!!!
This presentation was a school project by me and my friends. It has information about almost everything in the solar system except for planets and stars
This is my first English project to complete my English Presentation. So, I think I’m not too good at English, I made it really simple because I was confuse what will I do.
Here, I try to learn about English. I apologize if I make any mistake. I’m really bad at English okay. But I will learn.
So this is tell us about supernova, and how supernova can be formed, type of supernova, and siclus of star. Thank you very much if you want to read this ^^
search on NASA site also go through the latest news related to black holes before presenting your seminar.
many queries are asked related to black holes.
present the astronomical data's for Good delivery of seminar.In the 18th century John Michell and Pierre-Simon Laplace first mentioned about the objects with a huge gravitation, from which even light cannot escape.
In 1915 Albert Einstein developed the theory of general relativity.
Karl Schwarzschild finds black holes as a solution to Einstein’s equations (1916)
Robert Oppenheimer and Hartland Snyder predict that massive stars can collapse into black holes (1939)
A black hole is a region of space that has so much mass concentrated in it that there is no way for a nearby object to escape its gravitational pull.”
Black holes are exotic structures whose gravitational fields are so powerful that they trap everything, even light. They were first postulated by Albert Einstein's theory of general relativity.”
This can happen when a star is dying.
Though they are black they are invisible to us.
The density of a black hole is so great it would be like taking the whole Earth and crushing into a volume smaller than a 1” marble!.
Stellar-mass: 3 to 20 times the mass of our Sun
Supermassive: Black holes with millions to billions of times the mass of our Sun
Mid-mass: In between stellar-mass and supermassive.
Do We Live in a Black Hole? Modern Conceptions of the MultiverseLuke Conlin
Modern physics grapples with some of humankind’s biggest questions: ‘Why is the universe the way it is? And why are we here, able to ask the question?’ In their search for answers, leading physicists have been considering some wild ideas, including the existence of multiple universes (the ‘multiverse’) and the possibility that we may actually be living in a black hole. I will explain the physics behind these wild ideas, describe how they might answer our biggest questions, and lay out the prospects for finding observational evidence to support or refute them.
When asked to do a research assignment, Rafael , 12M (EJR) went for two topics that have puzzled him. This is the ppt he created as the support for his presentation.
Space telescopes (2/3) - NASA's Active Orbiting SatellitesSteven Belaire
The second of a 3 part series exploring currently active space telescopes. This installment covers NASA's active orbiting satellites (excluding solar telescopes).
this ppt is made by shantanu milkhe, it contain everthing about black hole, its my full i can share, so please watch it. and follow me at my intagram https://www.instagram.com/shantanu_stark/?hl=en
This is a very broad overview of cosmology. It includes an introduction to galaxies, the large scale structure of the universe, black holes, and the fate of the universe. It is intended for teenagers and up.
This article aims to present possible strategies to save humanity from the consequences related to the cosmic rays that reach the planet Earth, especially the gamma rays emitted by supernovae, and those that threaten human beings in space travel.
Explore the multiwavelength view of the Crab Nebula at Views.pdfacupressuresujok
Explore the multiwavelength view of the Crab Nebula at Viewspace.org and NASA's discussion of
the origin of this radiation. Compare these to the view of the Helix Nebula and NASA's video of its
radiation. The discussion of the visible and infrared are better at the NASA sites, but the
Viewspace sliders can help you quickly notice features in each range. If you were observing these
objects for the first time, what evidence would you use to show that the Crab Nebula is a
supernova remnant while the Helix Nebula is a planetary nebula? - In the X-ray range: In the
center of the , we see evidence of particle jets. should look exactly like this, as their magnetic
fields funnel particles away along their magnetic poles. These remnants occur at the center of
Type II Supernova explosions, so this object is a supernova remnant. In the center of the , we see
an X-ray glow from a point-like structure. There are no particle jets, so it can't be a , and therefore
must be a , which is found at the center of a planetary nebula. - In the visible and infrared ranges:
In the , filaments of hydrogen gas in the outer structure glow (careful: the visible color in the
Viewspace view is false color check with NASA!). Closer to the center, a blue glow comes from .
That could only happen in the presence of a strong magnetic field, lending additional support to
this object being a supernova remnant. - In the outer structure of the , we observe emission from
in the visible, and farther from the center emission from and blackbody radiation from . No exotic
magnetic effects are needed to understand these ranges, so it's likely that this is simply a
planetary nebula..
Presentation to Bangkok Scientifique Meetup group on August 27, 2014.
Overview of galaxies and introduction to dark matter, spanning the Milky Way to the Local Group to rich clusters of galaxies. Simple galaxy morphologies, various ways in which we see the gravitational influence of dark matter.
14. Is radiation from supernovae and GRB sources dangerous to Earth? How close would they have to be?
15. Radiation on Earth Radioactive sources emit gamma-rays. If we are too close to a radioactive source, like a chunk of uranium, we cannot see the radiation, but it is still harmful to us! So how far should Earth be from cosmic radiation sources to be safe? Danger - Radioactive!
16. Death from Exploding Stars?! . Artist’s Conception of the Milky Way Galaxy Location of Solar System
17. How close would a Supernova have to be? . Location of Solar System
18. How close would a Supernova have to be? . Location of Solar System
19. How close would a Supernova have to be to be dangerous? . Supernova: within 30 light years Nearest Supernova Candidate: over 250 light years away! Location of Solar System
20. How close would a Gamma-Ray Burst (GRB) source have to be? . Location of Solar System
21. How close would a Gamma-Ray Burst (GRB) source have to be? . GRB Danger Zone: within 8,000 light years Location of Solar System
22. How close is the nearest Gamma-Ray Burst (GRB) source ? . Our galaxy is about 100,000 light years across Nearest detected GRB source: over a Billion light years away! GRB Danger Zone Location of Solar System
23. Earth’s Atmosphere & Magnetic Field Protect Earth from most high-energy radiation . . . But prevent us from detecting it here on Earth
24. The high view: getting a better look GLAST Swift Suzaku XMM-Newton (X-ray Multi-Mirror Mission) X-rays Gamma-rays
25. Life from Exploding Stars! Scientists have discovered that most of the heavy elements in the universe are dispersed from stars that go supernova. Oxygen