The Moon has always been a steady presence in the night sky, but recent observations are forcing scientists and sky-watchers to look again at what it is quietly enduring. Irish astronomers reported a ...

Moon mission day 3: Settling into life in deep space ...

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The Antennae galaxies are witnessed in the process of merging into a single elliptical galaxy.

The Heart Nebula shines 6,000 light-years from Earth in the constellation Cassiopeia. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking ...