The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...

Now in its ninth year, the overwhelmingly expansive sci-fi survival sim No Man’s Sky is transforming yet again. Another ...

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

From January to March, the night sky will host a spectacular parade of planets featuring Venus, Mars, Jupiter, Saturn, Uranus ...

According to New Scientist: “The great alignment, including Mercury, will only happen for a few evenings around 28 February, ...

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

Six planets are parading across the sky, appearing as some of the night's brightest stars. A few easy tips can help you ...