Moons

Six real-life Star Wars worlds

The Stars Wars universe has been captivating audiences for decades, but astronomers are beginning to find alien worlds that bear an uncanny resemblance to the planets dreamt up by George Lucas.

Cassini’s one-way mission into Saturn

This week Cassini’s two-decade-long mission comes to a spectacular close. But before the craft ends its trip with a fatal plunge into Saturn, let's look at some of the incredible discoveries it has made.

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Are there rainbows on other planets?

The ingredients required to make a rainbow are sunlight and raindrops. Currently, there is no other planet known to have liquid water on its surface or in sufficient quantities in the atmosphere to make rain.