edwin hubble
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Hubble Telescope Put Into Dreaded Safe Mode Due to Ongoing Glitch
NASA’s iconic Hubble Space Telescope isn’t doing so well. The observatory has been suffering from a pesky glitch affecting its gyroscope, causing it to suspend its science operations for a second time in less than six months. On Friday, NASA announced that Hubble had automatically entered safe mode on Tuesday, April 23 when one of…
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Glitching Hubble Puts Science Missions on Hold
NASA is addressing an issue with a Hubble Space Telescope gyroscope that prompted the observatory to enter safe mode on November 23. Science operations have been suspended as a result, but the space agency doesn’t seem too worried. Hubble, launched on April 24, 1990, and renowned for its significant contributions to astronomy, is experiencing a…
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Shell Galaxy Reveals Its Onion-Like Layers to Dark Energy Camera
Behold a galactic onion: the shell galaxy NGC 3923, spotted by the Cerro Tololo Inter-American Observatory’s Dark Energy Camera (DECam) at a distance of about 70 million light-years from Earth. Shell galaxies make up approximately 10% of all elliptical galaxies, one of the three main galaxy types. The other two types are spiral galaxies, like…
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Surprising Discovery of Two Ancient Galaxies Exposes Our Cloudy View of the Cosmos
The presence of two previously undetected galaxies some 29 billion light years away suggests our understanding of the early universe is upsettingly deficient.