The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

The European Southern Observatory's Very Large Telescope (VLT) imaged both of the planets directly, and PDS 70b has the ...

Explore Ceres, the largest asteroid in our solar system, and discover its remarkable ancient ocean and ice-rich crust.

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien astronomers could also be scanning Earth.

NASA artist’s conception of a brown dwarf (main) and stock image of the planets in the solar system (inset ... this time including the orbits of the inner planets (Mercury, Venus, Earth ...

All of our solar system’s planets are lining up to ... apparent than during a planetary alignment. An alignment including all of the planets except Mercury is taking place in mid-January.

The organic ingredients to life, hints to where Earth’s water came from, and the fundamental building blocks of our planet ...

Gaia-4b is considered a super-Jupiter planet, a relatively cold gas giant, orbiting its star over 570 Earth-days. That star ...