ESA's Mars Express orbiter captured footage of the Mars' moon Deimos pass in front of Ganymede, Europa, Jupiter, Io and ...

Researchers have finally mapped Jupiter’s upper atmosphere with unmatched detail, exposing a stable, planet-wide structure that has remained largely unchanged for years. This discovery, published in ...

Spectacular clouds swirl across the surface of Jupiter. These clouds contain water, just like Earth's, but are much denser on the gas giant—so thick that no spacecraft has been able to measure exactly ...

Mercury is due to join Venus and Jupiter in the night sky for an uncommon celestial event commonly known as a planet parade. Here's how to catch it.

The planets Venus and Jupiter will appear extremely close together in Irish skies tonight in an event Astronomy Ireland is calling a "double planet".