A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the ...

Ever since Isaac Newton famously talked about gravity, its dominance as a force in our solar system has been well known. It's ...

BS4 may be anywhere between 17 and 40 feet across, and will approach at about twice the distance between the Earth and moon.

Planetary alignment: when and how to see 7 planets line up over UK skies this February - A rare celestial event where seven planets align is visible in the UK skies. Discover how, when, and where you ...

Despite common assumptions, the disk of our Solar System is warped, and the planets travel around the Sun in slightly eccentric (or oblong) orbits. Scientists now think that a mysterious object ...

A Triple Star System Yields an Unusual Surviving Star Unlike our Sun, which exists alone, at least half of the stars in our ...

Simpson and Chen ran mathematical models looking at how differently sized Earth-like worlds would have affected the rest of ...

The case of mistaken identity was quickly resolved, but astronomers say it shows the need for transparency around craft in ...

The skies will host a rare celestial event today, on January 25 as all major planets in our solar system align in a ...

A new study claims it is possible an "alien visitor" could have warped our solar system during its earliest years.

Stargazers, prepare for the parade of planets that will take place over the next few nights in the sky. Here's what you need ...

Stargazers will be treated to a dazzling six-planet "alignment" this January.