To our best of our understanding, the Moon formed from Earth following a colossal impact. A Mars-sized world we nicknamed ...

Roughly four and a half billion years ago the planet Theia slammed into Earth, destroying Theia, melting large fractions of ...

Space has a knack for bending our sense of scale. The Moon feels close enough to touch—after all, we see its craters with ...

Theia, the world that helped form the Moon, came from the Solar System. Chemical clues in Earth and Moon rocks reveal this ...

European astronomers report the discovery of a second alien world in the TOI-1422 planetary system located some 500 light ...

The Sun, our nearest celestial neighbor, is undeniably a star, not a planet, as centuries of astronomical observations have ...

About 4.5 billion years ago, a colossal impact between the young Earth and a mysterious planetary body called Theia changed everything—reshaping Earth, forming the Moon, and scattering clues across ...

For many, leftovers are one of the perks of hosting Thanksgiving. They can also be given a second life. Gamoran says mashed potatoes can be transformed into breakfast foods like waffles and pancakes, ...

During the weekend, the orbits of Earth and Saturn will combine to create an interplanetary optical illusion for anyone with ...

A newly discovered cluster of objects called the “inner kernel” of the Kuiper belt could teach us about the early history of ...

Using NASA's Transiting Exoplanet Survey Satellite (TESS), astronomers have discovered that aging stars in their so-called "red giant" phase are even more destructive to their orbiting planets than ...

For the first time in years, astronomers are seriously talking about adding a new member to the solar system’s planetary ...