While for most people Pluto is the most distant planet in the Solar System, things get a lot more fuzzy once you pass Neptune ...

More than $10 billion in funds are included in Trump’s tax and spending bill for NASA programs previously targeted by the ...

How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...

The planets in order from the Sun are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. If you include the ...

For years, scientists have been scanning the icy outskirts of our Solar System for an unknown massive planet. The ...

By looking at the shifting of stars in photos from the New Horizons probe, astronomers have calculated its position in the ...

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Our solar system is a pretty wild place, full of amazing stuff. From the giant Sun to the tiny rocks floating around, there’s ...

NASA's New Horizons spacecraft has traveled so far from Earth that the relative position of the stars is beginning to shift — a fact that could help future spacecraft navigate the galaxy on their own.

The Keck Observatory and NASA’s Hubble Space Telescope may have uncovered a "potential three-body system in the Kuiper Belt," ...

In the frozen outskirts of the solar system, a reddish dwarf planet orbits in silence. Known as Sedna, it is so distant that ...