A rocky exoplanet 48 light-years from Earth has offered the 'strongest evidence yet' that other planets besides Earth could ...

Scientists are documenting a planetary system in the Milky Way galaxy that is so starkly dissimilar to our own solar system that they are struggling to find ​the proper terminology to describe it.

The national initiative will "help develop and demonstrate AI-enabled scientific workflows designed to accelerate ...

Astronomers have discovered a faint new world orbiting a young star after more than a decade of cosmic hide-and-seek.

Kevin McCartney has overseen the Maine Solar System Model since its creation in 1999. He says the model stretches nearly 160 ...

Are we alone in the universe? For scientists working on NASA's proposed Habitable Worlds Observatory, that question is no ...

Researchers probe the geochemistry of the moon, Mars, asteroids, and water worlds to understand our home and plan for future ...

Two SETI Institute planetary scientists now have asteroids bearing their names, an honor! The International Astronomical ...

NASA’s New Horizons spacecraft recently came out of hibernation to continue its journey through an unexplored part of the ...

Our definition of a planet has changed over the years — causing a bit of confusion. | Credit: wasan prunglampoo/Getty Images Over the past 250 years, the number of "planets" in our solar system has ...

This is read by an automated voice. Please report any issues or inconsistencies here. Astronomers have uncovered a pair of giant planets that are lighter than cotton candy — super-puffs the size of ...

For most of human history, our view of “close to the Sun” was defined by the orbit of Mercury, with its 88-day orbit and barren, baking surface. But from the moment we started discovering exoplanets, ...