Revealing the Milky Way’s Center
The center of our Milky Way galaxy is hidden from the prying eyes of optical telescopes by clouds of obscuring dust and gas. But in this stunning vista, the Spitzer…
Replacing the Space Station’s Solar Array Batteries
After completing the first of 10 spacewalks to upgrade the station, astronaut Christina Koch wrote: “The great @Space_Station battery swap series of spacewalks is underway! A joy & privilege working…
Milky Way’s Center Will Be Revealed by NASA’s Webb Telescope
The center of our galaxy is a crowded place: A black hole weighing 4 million times as much as our Sun is surrounded by millions of stars whipping around it…
Hubble Takes Closer Look at Not-So-‘Dead’ Neighbor
Many of the best-loved galaxies in the cosmos are remarkably large, close, massive, bright, or beautiful, often with an unusual or intriguing structure or history. However, it takes all kinds…
The Latest Look at “First Light” from Chandra
NASA’s Chandra X-ray Observatory has captured many spectacular images of cosmic phenomena over its two decades of operations, but perhaps its most iconic is the supernova remnant Cassiopeia A. Located…