Many things are taking place:
Earth-Like Planets May Be Common Outside Our Solar System, Scientists Discover - VICE
Scientists have directly observed the rocky guts of exoplanets, which are worlds from different star systems, by watching the fallout of these objects crashing into the corpses of dead stars.
This mind-boggling technique has revealed that exoplanets are similar in composition to planets in our own solar system, implying that worlds like Earth may be plentiful in our galaxy, according to a study published on Thursday in Science .
"It's pretty cool because this is really the only way to measure the geochemistry of exoplanetary bodies directly," said lead author Alexandra Doyle, a graduate student of geochemistry and astrochemistry at UCLA, in a phone call.
Co-author Edward Young, a professor of geochemistry and cosmochemistry at UCLA, added that the study represents "the first time such an advanced way of looking at the geochemistry of these bodies has been used," in the same call.
Solar systems are 'baby-proof' for newborn planets - CNN
Aliens could 'invade' our solar system using tiny robots and we might not even notice |
Here on Earth, you know a country has been conquered when loads of tanks, attacks helicopters and burly great soldiers roll into town.
But aliens could 'invade' our solar system using tiny 'micro-robots' which astronomers would probably fail to spot unless they knew exactly what to look for.
A new study has revealed that it's entirely possible an extraterrestrial civilisation has unleashed a massive squadron of microscopic probes which have spread out across the galaxy undetected.
Zaza Osmanov of the Free University of Tbilisi in Georgia has written a paper which discusses 'extraterrestrial micro replicators' called Von-Neumann probes that are capable of reproducing themselves.
Currently, the search for alien intelligence is focused on discovering huge 'megastructures' such as Dyson Spheres – hypothetical giant power stations built around stars to harvest their energy.
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What Makes a Planet and How Many Are There in Our Solar System?
What makes a space object a planet? How many are there actually in our solar system? Let's find out.
How many planets are there in our solar system? 9? 8? 12? More? The answer might actually surprise you.
Here we explore the answer to this apparently simple question and take a quick tour of the main primary planets of our home solar system.
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What is a planet? An enormous chunk of stuff (rock or gas), roughly spheroidal in shape that orbits a star and may or may not have a moon, right?
While this is in part true, there are some issues with such a simple definition. What about asteroids? When does an object become large enough to be considered a planet?
Why are Venus and Mercury planets (according to current classifications) but not Pluto? As it turns out, the reasons are pretty straight forward.
Oddball solar system throws planet formation theories into question | Science | AAAS
A solar system 31 light-years away is challenging astronomers' theories about how some types of planets form.
One leading notion about how the gas giants in our solar system—Jupiter, Saturn Uranus, and Neptune—developed is that agglomerations of dust and small pebbles eventually grew large enough to gravitationally attract large amounts of even light gases such as hydrogen and helium! Videos for Changing How We Protect Other Planets 2:54 JONATHAN HAIDT - CLIMATE CHANGE IDEOLOGY: Breaking Free Of Ideology To Save The Planet | London Real YouTube!! But that sort of planetary evolution doesn't seem to work for all solar systems.
Take the star dubbed GJ 3512 and its retinue of planets: The parent star is a red dwarf about one-eighth the mass of our own sun orbited by two gas giants (depicted in an image from a video simulation above). The larger planet, whose presence has been confirmed, is almost half the mass of Jupiter and orbits the star once every 214 days , researchers report today in Science . Its suspected companion, which orbits farther out and apparently circles the star every 3.8 years or so, may weigh at least half as much as Saturn.
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