31K views · 195 reactions | How do we map the gamma-ray sky? We take 7,464,664 gamma rays collected by the Fermi LAT over 12 years and turn that into a brightness map with a blue-orange-yellow color scale that best illustrates the sources. What crayons would you use to color Fermi's sky? | NASA Universe | Facebook

Westerlund 1 • Fermi Spots Young Star Cluster Blowing Gamma-Ray Bubbles • 19.12.25 VIDEO: This image of super star cluster Westerlund 1 was captured with the Near-InfraRed Camera on NASA’s James Webb’s Space Telescope. The cluster is largely hidden at visible wavelengths by dust clouds, which infrared light penetrates. Westerlund 1’s large, dense, and diverse stellar population of massive stars has no other known counterpart in the Milky Way. Credit: ESA/Webb, NASA & CSA • For the first time, as

14K views · 102 reactions | • CfA Astronomers Help Catch Rare...