NASAのインスタグラム(nasa) - 8月3日 10時21分
This could be the biggest ghost in the universe.? A new image from our Spitzer Space Telescope shows leftover signs of an exploded star, or supernova. Spotted in the Milky Way galaxy, this is the largest known supernova remnant at 150 light-years in diameter and it’s possibly one of the oldest: Astronomers estimate the original explosion may have happened anywhere from 80,000 to one million years ago.
Our Spitzer Space Telescope that spotted this fading ghost of a long-dead star is one of our four Great Observatories -- along with the Hubble Space Telescope (@NASAHubble), the Chandra X-ray Observatory (@NASAChandraXray) and the Compton Gamma-Ray Observatory. On Aug. 25, Spitzer celebrates its 15th birthday in space although it was originally designed to “stay alive” for 5 years in the harsh environment of space. Spitzer sees the universe in infrared light, which is slightly less energetic than the optical light we can see with our eyes, and helps us advance our knowledge about the Universe,
Credit: NASA/JPL-Caltech/IPAC
#nasa #space #solarsystem #Spitzer15 #universe #galaxy #milkyway #stars #astrophysics #astronomy #science #gammarays #ultraviolet #infrared #xrays
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