“Somewhere, something incredible is waiting to be known. “ Carl Sagan.Understanding from the unknown. Comprehension from the cosmos. Insight from theinfinite. The relationship between discovery and exploration has driven humancuriosity for all recorded history. Since the time of the ancient philosophers, we havestriven to comprehend our place in the universe and have looked to the heavens foranswers to the questions: Where do we came from? Are we alone? Where are wegoing? Exploration and discovery have been especially important to the worldexperience. Astronomers, astronauts, voyagers, and frontiers showed our nation theimportance of the knowledge, technology, resources, and inspiration that flowfrom, exploration. In this topic about recent discoveries and breakthroughs of Earth and Spaceexplorations, we showed various recent discoveries reports about planets, stars andother heavenly bodies. We also included some breathtaking captions and magnificentvideos about Earth and Space exploration for further realization.
There are 209 known planets outside the solarsystem, but there are even more out there, andastronomers need help finding them. The out of this worldproject is called SYSTEMIC. It‟s a free web program thatlets anyone hunt outer-space data to find our cosmicneighbors, which is not a one man job. Dr. Laughlinexplains, “ The kinds of computations that we need to doare computations that require a lot of computer power.They can farmed out to a large number of individualcomputers .” More than 4,000 possible planets have beensubmitted, and four are awaiting confirmation.
It took billions of years and the perfect conditionsfor our Earth to grow and form. Now, those sameconditions can be seen in space, shaping a similar planet.Far, far away. Something amazing is brewing in space.Swirling around a giant star similar to oursun, astrophysicists have spotted the very early stages of aplanet taking shape. Astronomers think they are seeing aformation of a planet—terrestrial planet—rocky planet likethe Earth, around the star. The Earth like planet is about430 light years away or 2.5 trillion miles from Earth. It’sinside a huge dust belt—bigger than our asteroid belt—with enough dusty material to build a planet.
The material is forming at just the same distance, or close the samedistance where the Earth formed from the sun. to find the planet,astronomers used images captured by the Spitzer Space telescope. Itlooks for infrared light or heat radiating from the dusty materials.The images also confirm the rocky fragments forming a new planetare similar to materials found in the Earth‟s crust and core. So, Thebody that‟s going to form—the planet that „s going to form—isn‟t goingto be gas giant with incredibly thick atmosphere. It‟s going to be arocky planet like Mars or Venus or the Earth. There‟s also an outerice belt circling the young planet, making it more likely that watercould reach the new planet‟s surface and maybe even life; but don‟twait around for signs of life. The planet still needs another 100 millionyears before it‟s completely formed. Astronomers say the star thenew planet is spinning around is between ten and 16 million years old,which is the perfect age for forming Earth-like planets.
Astronomers announce threestunning space discoveries. Couldthese findings mean we are notalone in the universe?
Astronomers say they may found at least half ofthe universe’s “missing mass”. Since 1930s, scientistshave been looking for this invisible mass called darkmatter. Which they say keeps galaxies from flying apart.( By their calculations, all visible stars don’t have enoughmass, and therefore gravitational pull, to hold galaxiestogether. How did astronomers find this dark matter? Theydetected increases in the brightness of stars in a nearbygalaxy. This brightening, they say, could only be causedby large objects passing in front of the stars. Theobjects’ mass indicates that they are white dwarfs. Orburned-out stars. If enough of these dead stars exist inspace, they could make up half of the universe’s missingmass. What about the other half? The scientists are stilllooking.
New photos from the Hubble telescope revealthat the universe may be a lot more crowded thanscientists once thought. Like this one, reveal some1,500 galaxies (groups of stars like our Milky Way) in atiny speck of space. Based on their view of thatspeck, scientists now estimate there may be 50 milliongalaxies in the universe-5 times their previousestimate. With 50 to 100 billion stars in eachgalaxy, the universe may contain5,000,000,000,000,000,000,000, or 1022 x 5 stars- orabout one trillion stars for every person on Earth.!
Computer simulations conducted by David Nesvorny of theSouthwest Research Institute show that the outer Solar Systemmay have possessed five giant gas planets, one of which wasbooted out as Jupiter jumped around in its orbit.Dynamical instabilities are common in a newborn solar system asplanets settle in their new-found orbits. Evidence for agravitational disturbance of rocky planetary building blocks in ourown Solar System is recorded in the impact crater history of ourbattered Moons ancient surface just 600 million years after itsformation. These cosmic collisions resulted from the outer giantplanets gravity unsettling smaller objects and sending themcareering headlong into the inner Solar System.
An artists impression of a Neptune-like planet ejected from the early SolarSystem. Image: Southwest Research Institute. At the same time, other smallobjects were flung into the outer icy reaches of the Solar Systems KuiperBelt, and Jupiter is thought to have migrated inwards on its orbit. But, saysNesvorny, a slow-moving Jupiter would likely have wrecked havoc in the innerSolar System, the transfer of momentum possibly even causing Earth to collidewith Mars or Venus.The "jumping-Jupiter" theory is indeed less harmful to the inner SolarSystem, but at the cost of either Neptune or Uranus being ejectedinstead, Nesvornys computer simulations revealed.Placing a fifth planet with a similar mass to Uranus or Neptune into the systemseemed to solve the conundrum. In this scenario, one planet was booted out ofthe Solar System due to interactions with Jupiter, leaving the current four planetsand the ability of Jupiter to still jump inwards, but without implicating the rockyinner planets.“The possibility that the Solar System had more than four giant planetsinitially, and ejected some, appears to be conceivable in view of the recentdiscovery of a large number of free-floating planets in interstellarspace, indicating the planet ejection process could be a common occurrence,”adds Nesvorny.