Iran says it is preparing for satellite launch

Iran said Sunday that two newly constructed satellites have passed pre-launch tests and will be transported to the nation's space center for eventual launch, without elaborating.

Stars pollute, but galaxies recycle

Galaxies were once thought of as lonely islands in the universe: clumps of matter floating through otherwise empty space. We now know they are surrounded by a much larger, yet nearly invisible cloud of dust and gas. Astronomers ...

A dusty lab in the sky

Joe Nuth loves dust. Among astronomers, that puts him in a minority.

Shining (star)light on the search for life

In the hunt for life on other worlds, astronomers scour over planets that are light-years away. They need ways to identify life from afar—but what counts as good evidence?

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