'Planet parade' isn't a technical term in astronomy but it is one widely used to describe the alignments of planets. The current four which are visible to the naked eye are Mars, Jupiter, Saturn and ...

This week, NASA released the first image from the Europa Clipper spacecraft's voyage. The image is a mosaic of a star field, created from three shots the solar-powered orbiter captured in December of ...

Auroras have long mystified humanity. Now that we know what they are and why they happen, we can better predict how best to ...