Other possibilities have been proposed, from a planetoid captured in Earth orbit to it forming in orbit around Earth's protoplanet as a system of 2 bodies. But the is the leading theory, backed by the most evidence.
The primodial Universe only had hydrogen and helium. There were no elements for making solid things like earth-like planets, when the first stars formed.
The terrestrial planetds are believed to gave have formed separately from accretion of matter at different ranges of distance from . Moreover, Mercury is so dense that astronomers are led...
Our solar system is moving along with the galaxy of course. It is also moving, though rather slowing, within the galaxy. We do not have a good grasp of other...
1 It must be orbiting a star 2 should have enough mass to form a sphere. 3 Clear its neighborhood of other things. This was done in 2006.Pluto was removed...
Wobbling, transit methods can only find large planets,..Directs observation is also difficult..When planet isvfar away the periods are very long and difficult to watch with the present day technology..
Night is day for antipodal locations, Of course, night Full Moon could possibly seen at the same time, as daytime Full Moon, at diametrically opposite locations, depending upon Moon-rise...
around 5 probes are in orbit around mars.Maven, Mangal yan, mars orbiter Mars oddessy. etc. THewy are in working condition. Another 8 are in orbit but lost contact or control.
Our Sun was formed by a rotating cloud of dust and gas called a Nebula mainly due to a nearby gravitational event that collapsed the nebula, more and more matter...
