Space

Scientists have discovered what they believe may be the largest impact crater in the entire solar system, with scars covering a vast portion of Jupiter’s biggest moon, Ganymede.

Lurking just below the atmosphere of Venus is a wall of acid clouds that whip around the planet at speeds close to that of a commercial air jet on Earth.

Skywatchers beware: the moon will hinder attempts to observe the Perseids, typically one of the best meteor displays of the year.