Cassiopeia A in 60 Seconds (02-23-2011)
A new discovery from a famous exploded star has provided the first evidence for a bizarre state of matter in its core.

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Arp 147 in 60 Seconds (02-09-2011)
This image shows Arp 147, a pair of interacting galaxies some 430 million light years from Earth.

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- Related Links:
--  Giant Ring of Black Holes
--  Tour of Arp 147

GRS 1915+105 in 60 Seconds (01-29-2011)
GRS 1915+105, or GRS 1915 for short, is a special system. Not only does it contain a black hole some 14 times more massive than the Sun in orbit with a companion star, it also has a heartbeat.

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- Related Links:
--  Taking the Pulse of a Black Hole System
--  A Tour of GRS 1915+105