A composite image of the spiral galaxy NGC 4258 showing X-ray emission observed with NASA's Chandra X-ray Observatory (blue) and infrared emission observed with NASA's Spitzer Space Telescope (red and green).
This composite image shows one of the clusters, NGC 2024, which is found in the center of the so-called Flame Nebula about 1,400 light years from Earth. Astronomers have studied two star clusters using NASA's Chandra and infrared telescopes.
About 2,400 massive stars in the center of 30 Doradus, the Tarantula Nebula, produce intense radiation and powerful winds as they blow off material seen as infrared emission from NASA's Spitzer Space Telescope and X-rays from Chandra X-ray Observatory.
RCW 108: Massive Young Stars Trigger Stellar Birth
RCW 108 is a region where stars are actively forming within the Milky Way galaxy about 4,000 light years from Earth. This image is part of a large collection of images of merging galaxies taken by NASA's Hubble Space Telescope.