14K views · 271 reactions | Once space operations begin, our shoebox-sized BurstCube satellite will search for short gamma-ray bursts. Our Traveler insists on visiting these brief high-energy flashes of light, and while they may look spectacular, don’t get too close! Find out why: https://go.nasa.gov/3QrufzU | 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