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Tour of Abell 1033 (08-27-2015)
Understanding how clusters grow is critical to tracking how the Universe itself evolves over time.

A Tour of RGG 118 (08-13-2015)
Oxymorons are often thought of as gaffes in language, but a new black hole discovery shows they can also represent important scientific advances.

Coloring the Universe - Part 2 (08-04-2015)
Last time, we looked at the electromagnetic spectrum. This time we'll look at how astronomical images are made.

Coloring the Universe - Part 1 (08-03-2015)
An astronomer's toolkit consists of many kinds of light, across the electromagnetic spectrum.

Chandra's Sweet Sixteen (07-28-2015)
This year, NASA's Chandra X-ray Observatory celebrates its own "sweet 16."

A Tour of PSR B1259-63/LS 2883 (07-22-2015)
A fast-moving pulsar appears to have punched a hole in a disk of gas around its companion star and launched a fragment of the disk outward at a speed of about 4 million miles per hour.

A Tour of NGC 1333 (07-07-2015)
While fireworks only last a short time here on Earth, a bundle of cosmic sparklers in a nearby cluster of stars will be going off for a very long time.

A Tour of NGC 5813 (07-06-2015)
Galaxy groups are families of galaxies that are bound together by gravity. They are very similar to their larger cousins, galaxy clusters.

Light Beyond the Bulb: Over and Beyond the Rainbow (07-01-2015)
While scientists and philosophers have tried to figure out exactly what light is for millennia, it's only been in the past several hundred years or so that we've really started to figure it out.

A Tour of Circinus X-1 (06-25-2015)
These rings are light echoes, similar to sound echoes that we may experience here on Earth.