Studying the orbits of thousands of exoplanets shows that large planets tend to have elliptical orbits, while smaller planets ...

Using a NASA supercomputer to run models, researchers led by SwRI astronomer David Nesvorny now believe that the Inner Oort cloud looks like a spiral disk, around 0.24 light-years across, with two ...

Whenever planets are visible in the night sky, they always appear roughly along the same line. This path, known as the ...

Extrasolar planets contextualise the Solar System among a large number of planetary systems with very different properties. Many extrasolar planets show characteristics which are not realised in the ...

Seven planets will line up for a rare "planetary parade" today (Feb. 28) and you can watch it live online, beginning at 12:00 p.m. ET (1700 GMT).

Watch this video to find out more about the Earth, planets in our Solar System and other planets far off in outer space. From up here on the International Space Station I get a great view of Earth.

Clear skies will also be necessary to see all the planets. The planets in the solar system orbit the sun, just as Earth does. Every planet orbits at a different speed and distance. During these ...

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All of our solar system’s planets are lining up to parade through the night sky at once. This extraordinary celestial event will see the sky scattered with seven visible planets in what is known ...

That path is called the ecliptic, and it exists because all planets in our solar system orbit around the sun on roughly the same plane. Astronomers, on the other hand, look for more specific ...

Everyone knows about the Solar System, and the planets that make it up. They’re in space, orbiting the Sun, in an order we all at least used to be able to recite. But it was not always so.