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UFOs and ufology. Unidentified flying objects have been reported by astronauts while in space. These sightings have been claimed as evidence for extraterrestrial life by ufologists. Some of the alleged sightings never occurred: science fiction writer Otto Binder perpetuated a hoax claiming Apollo 11 Commander Neil Armstrong had encountered UFOs ...
It differs from the “light travel distance” since the proper distance takes into account the expansion of the universe, i.e. the space expands as the light travels through it, resulting in numerical values which locate the most distant galaxies beyond the Hubble sphere and therefore with recession velocities greater than the speed of light c.
Lists of unusual things in Wikipedia mainspace (see Category:Lists of things considered unusual) should have an external reference for each entry that specifically classifies it as unusual, to avoid making it a point of view (POV) fork of original research. Still, all such lists risk being deleted for lack of a neutral definition of what counts ...
The James Webb Space Telescope lets astronomers see a tremendous number of deep space galaxies — and they're finding some peculiar things.Of note, scientists recently pointed the Webb telescope ...
Lists of astronomical objects. Selection of astronomical bodies and objects: Moon Mimas and Ida, an asteroid with its own moon, Dactyl. Comet Lovejoy and Jupiter, a giant gas planet. The Sun; Sirius A with Sirius B, a white dwarf; the Crab Nebula, a remnant supernova. A black hole (artist concept); Vela Pulsar, a rotating neutron star.
Most things visible to the naked eye in the sky are part of it, including the Milky Way composing the Zone of Avoidance. [12] Large Magellanic Cloud: 0.9 160 kly (49 kpc) Dorado/Mensa: Visible only from the southern hemisphere. It is also the brightest patch of nebulosity in the sky. [12] [13] [14] Small Magellanic Cloud (NGC 292) 2.7 200 kly ...
The Great Attractor is a region of gravitational attraction in intergalactic space and the apparent central gravitational point of the Laniakea Supercluster of galaxies that includes the Milky Way galaxy, as well as about 100,000 other galaxies. The observed attraction suggests a localized concentration of mass having the order of 10 16 solar ...
Solar eclipse of October 2, 2024. 2026 August 12. Total solar eclipse near lunar perigee. 2027 February 6. Annular solar eclipse. 2027 August 2. Total solar eclipse. 2027 August 7. Asteroid (137108) 1999 AN 10 will pass within 388,960 km (0.0026 AU) of Earth.