For the better part of a century, we believed there were nine planets in our solar system, with Pluto being the farthest from the sun. Since the discovery of more Pluto-sized dwarf planets, that ...

Solar system is a collection of various celestial bodies that are held together by the gravitational pull of the sun. Our ...

Beneath the wings of the space shuttle Enterprise in a cavernous hangar at the National Air and Space Museum's Virginia annex, space exploration took a deeper turn into the unknown yesterday with the ...