The shape of a planet's orbit is one of its fundamental properties, along with its size and distance from its host star.

"The goal of this project was to explore the fundamental low-mass limit of the star and brown dwarf formation process." ...

According to the team, the gravitational pull of our solar system's planets and passing stars do not have much ... the Oort spiral at some point but that's an extremely challenging project. "One ...

Exciting new research suggests there are four miniature planets orbiting Barnard’s Star, each thought to be just 20 to 30% ...

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

NASA engineers are turning off two instruments on Voyager 1 and Voyager 2 to ensure these twin spacecraft can continue ...

Mercury is joining Venus, Mars, Jupiter, Saturn, Uranus, and Neptune for a seven-planet parade. It's a stargazer's paradise.

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.

Stargazers will be treated to a rare alignment of seven planets on 28 February when Mercury joins six other planets that are already visible in the night sky. Here's why it matters to scientists.

Ever since the beginning of the Space Age, the inner planets and ... surprisingly active solar cycle, and emphasized the importance of SDO in our solar early warning system. In a lot of ways ...

The first two weeks of March provide a great opportunity to sight four bright naked-eye planets ... solar conjunction on March 12. Earth will pass through the plane of Saturn's ring system on ...