The Hubble Space Telescope has reached the jaw-dropping milestone of discovering more than 6,000 new worlds. The joint NASA / ...

What can rocky planets orbiting in the outer parts of a solar system teach scientists about planetary formation and evolution? This is what a recent study published in Science hopes to address as a ...

It's true, though: outer space does have a smell, or rather, many smells. The cosmos isn't sterile or empty, after all. It's ...

When you think of outer space, you're likely picturing stars, planets and moons. But much of space is filled with clouds of ...

There may be a warp in the Kuiper Belt, possibly caused by “Planet Y” — a Mercury-to-Earth-sized world that orbits the sun way beyond the orbit of Neptune. Is there a mysterious “Planet Y” orbiting ...

"Rather than 'icy' or 'rocky,' we should simply call them minor giants." ...

Credit: Kamalika Chakraborty A bizarre pair of planets 190 light-years away is forcing astronomers to rethink how planetary ...

LONDON — The search for an unknown planet in our solar system has inspired astronomers for more than a century. Now, a recent study suggests a potential new candidate, which the paper's authors have ...