Humanity may need look no further than our own Solar System in the search for alien life, researchers probing one of Saturn's moons say.

A solar system with as many planets as our own has been discovered with the help of NASA's Kepler space telescope and artificial intelligence, the US space agency says.

An international team of scientists said Monday they had discovered a trio of Earth-like planets that are the best bet so far for finding life outside our solar system.

The colossal impact that created the moon may have spawned the cosmic mashup between the rocks that ultimately became Earth and its lunar neighbor, Space.com reports quoting researchers.

American astronomers say they have strong evidence that there is a ninth planet in our Solar System orbiting far beyond even the dwarf world Pluto.

Stunned scientists announce the unexpected discovery of large quantities of oxygen on a comet which streaked past the Sun in August with a European spacecraft in tow.

A planet 100 light-years away resembles an infant version of Jupiter, astronomers say.