Astronomers measure the speed at which the solar system is hurtling through space by mapping surrounding galaxies and ...

Planet hunters have grown used to strange worlds, but a handful of discoveries now point to something even more radical: ...

To see Earth from space is to be forever changed by the view. Since Alan Shepard became the first American to lay eyes on our ...

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 ...

Scientists traced the Moon's parent planet Theia to the inner Solar System, solving a 4.5-billion-year mystery.

A nearby binary star system is bereft of giant planets, but scientists think it may still be a decent place to look for life. Binary star system Eta Cassiopeiae, located just 19 light-years away, ...

Researchers say the finding may also shed light on how giant planets gradually shifted to their current orbits and what interstellar conditions the solar system faced during its birth.

Saturn's rings will appear to have disappeared if you catch a glimpse of the planet through the eyepiece of a telescope on ...

Potential impactors are most likely to have low velocities and the highest likelihood of hitting Earth during the winter.

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

Tossing a bad guy into the Sun sounds simple enough, but orbital mechanics make it a far trickier task than you'd expect.