Even at a glance, the planets in our solar system are wildly diverse. Huge and small, airless and densely packed with ...

NASA unveiled a new telescope on Tuesday to scan vast swaths of the universe for planets outside our solar system and probe ...

Weirdly, spaceships have no direct way to gauge their own speed. Luckily, we can use some physics tricks to figure it out.

The Dark Energy Spectroscopic Instrument (DESI) has completed its originally planned five-year mission and mapped more than 47 million galaxies and quasars, and will continue observations into 2028 ...

Explore the vastness of the Solar System in this video, which accurately showcases the relative sizes of the planets and ...

The LHS 1903 system defies expectations with a rocky outer planet, prompting new ideas about how planets form and evolve.

Rather than slowly condensing over millions of years, the first building blocks of Earth and other planets may have formed ...

At more than one million degrees, the sun's atmosphere—the corona—is incredibly hot; but not everywhere. Time and again, huge ...

Increased solar production was a key reason the growth of carbon-free energy sources outpaced rising demand. Coupled with a ...