Sagittarius A* in 60 Seconds (01-21-2010)
Astronomers have long known that the supermassive black hole at the center of our Milky Way galaxy is a particularly poor eater.

NGC 6240 in 60 Seconds (10-07-2009)
NGC 6240 is a system in which two supermassive black holes are a mere 3,000 light years apart, virtually nothing in astronomical terms.

GRS 1915 in 60 Seconds (06-25-2009)
We start with an optical and infrared image that shows the crowded area around the object known as GRS 1915+105, or GRS 1915 for short.

M81 in 60 Seconds (08-21-2008)
This image of the mammoth spiral galaxy M81, located about 12 million light years away, contains data from four different NASA satellites.

Just Two Numbers Is All You Need (06-02-2008)
Black holes sound wildly complicated. After all, there are all sorts of bizarre things going on: intense gravity, the warping of the fabric of space, the distortion of time itself. But when it comes to describing black holes, it comes down to just two numbers: the mass of the black hole and its spin.

The Truth and Lies about Black Holes (11-30-2007)
Black holes have a bad reputation. After all, something that could swallow you completely sounds pretty scary. They're invisible, so maybe there's one just around the corner and we dont know it! Also, arent they enormous vacuum cleaners capable of destroying anything that gets near them? Once the black hole starts pulling on something, isnt that just a one-way ticket to oblivion? Well, not all of these things are exactly true.

Black Holes: Tall, Grande, Venti (12-31-2006)
Long before astronomers found evidence that black holes existed, these exotic objects have captured imaginations. In the 21st century, scientists not only have proof that black holes are real, they continue to make startling discoveries both about individual black holes examples and about their populations across the Universe.