Sarah Fecht
at 11:54 AM Apr 24 2017

Although the night sky often seems so peaceful and still, a closer look reveals constant movement and change. The Intermediate Palomar Transient Factory (iPTF) in California looks for ephemeral phenomena in the heavens, like stars that fluctuate in brightness, or planets passing in front of their stars.

Julie Beck
at 01:41 AM Sep 13 2011
Space // 

When light from an exploding star in the Large Magellanic Cloud reached Earth in 1987, it was the closest supernova explosion astronomers had witnessed in centuries. Now Supernova 1987a is making history again, this time as the youngest supernova remnant that can be seen from Earth.

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