Called Kepler-51, the Sun-like yellow dwarf star was found in 2012 to have three exoplanets in its orbit; each, it would turn ...

Earth's mesmerizing northern and southern lights — the auroras — have captivated humans for millennia. But our planet isn't ...

Venus will pass to the north of the much-fainter bluish star Regulus (in Leo, the Lion) on the morning of Sept. 19; the planet and star will appear low in the east-northeast predawn sky, separated by ...

An object up to dozens of times the mass of Jupiter flying through our solar system may have disrupted planetary orbits.

The evolution of the orbits of the planets is a complex process. Initially the planets formed out of a rotating disk of gas ...

The odd atmosphere of a fledgling exoplanet is causing astronomers to question leading theories of how planets form.

Astronomers posed over the past decade that dark comets, or objects that resemble asteroids but move like comets, may exist.

Carrying out simulations to try and discover what best explains the orbits of these objects, the team found that a model that ...

It's possible for our solar system to capture a rogue planet and give it a home as it hurtles through the galaxy, according ...

The innermost Earth-like planet in the famous TRAPPIST-1 system might be capable of supporting a thick atmosphere after all, ...

Massive object passing through solar system is a better explanation for nature of orbits of Jupiter, Saturn and Neptune ...

The asteroid belt is messy and sometimes a threat to our solar system’s planets, so on this episode of Dead Planets Society it’s time to tidy it up into a single asteroid world ...