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Many modern telescopes and observatories are located in space to observe astronomical objects in wavelengths of the electromagnetic spectrum that cannot penetrate the Earth's atmosphere (such as ultraviolet radiation, X-rays, and gamma rays) and are thus impossible to observe using ground-based telescopes. [1]
Related media on Commons. [edit on Wikidata] GRB 221009A was an extraordinarily bright and very energetic gamma-ray burst (GRB) jointly discovered by the Neil Gehrels Swift Observatory and the Fermi Gamma-ray Space Telescope on October 9, 2022. The gamma-ray burst was ten minutes long, [1] but was detectable for more than ten hours following ...
The Moon as seen by the Energetic Gamma Ray Experiment Telescope (EGRET), in gamma rays of greater than 20 MeV. These are produced by cosmic ray bombardment of its surface. [1] Gamma-ray astronomy is a subfield of astronomy where scientists observe and study celestial objects and phenomena in outer space which emit cosmic electromagnetic ...
Lowell Observatory, Anderson Mesa Station. / 35.09694°N 111.53583°W / 35.09694; -111.53583. Anderson Mesa Station is an astronomical observatory established in 1959 as a dark-sky observing site for Lowell Observatory. It is located at Anderson Mesa in Coconino County, Arizona, about 12 miles (19 km) southeast of Lowell's main campus ...
In gamma-ray astronomy, gamma-ray bursts (GRBs) are immensely energetic explosions that have been observed in distant galaxies, being the brightest and most extreme explosive events in the entire universe, [1][2][3] as NASA describes the bursts as the "most powerful class of explosions in the universe". [4]
Ufologists. Alleged extraterrestrial beings. v. t. e. The Phoenix Lights (sometimes called the " Lights Over Phoenix ") were a series of widely sighted unidentified flying objects observed in the skies over the southwestern U.S. states of Arizona and Nevada on March 13, 1997. [2] Lights of varying descriptions were seen between 7:30 pm – 10: ...
Messier 74 (also known as NGC 628 and Phantom Galaxy) is a large spiral galaxy in the equatorial constellation Pisces. [a] It is about 32 million light-years away from Earth. [6]
The Hercules–Corona Borealis Great Wall (HCB) [1][5] or simply the Great Wall[6] is a galaxy filament that is the largest known structure in the observable universe, measuring approximately 10 billion light-years in length (the observable universe is about 93 billion light-years in diameter). This massive superstructure is a region of the sky ...
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