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Stellar classification
In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics.
Note: The above text is excerpted from the Wikipedia article "Stellar classification", which has been released under the GNU Free Documentation License.
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Space & Time News
October 5, 2024
Oct. 3, 2024 — Deposits of ice in lunar dust and rock (regolith) are more extensive than previously thought, according to a new analysis of data from NASA's LRO (Lunar Reconnaissance Orbiter) mission. Ice would be a valuable resource for future lunar expeditions. ...
Oct. 1, 2024 — Astronomers have discovered an exoplanet orbiting Barnard's star, the closest single star to our Sun. On this newly discovered exoplanet, which has at least half the mass of Venus, a year lasts just over three Earth days. The team's observations ...
Oct. 1, 2024 — Astronomers have detected carbon dioxide and hydrogen peroxide on the frozen surface of Pluto's largest moon, Charon, using observations from the James Webb Space Telescope. These discoveries add to Charon's known chemical inventory, previously ...
Sep. 26, 2024 — In a surprise finding, astronomers using NASA's Hubble Space Telescope have discovered that the blowtorch-like jet from a supermassive black hole at the core of a huge galaxy seems to cause stars to erupt along its trajectory. The stars, called ...
Latest Headlines
updated 12:56 pm ET
Oct. 3, 2024 — Looking deep into the early universe with NASA's James Webb Space Telescope, astronomers have found something unprecedented: a galaxy with an odd light signature, which they attribute to its gas ...
Oct. 3, 2024 — For the first time, scientists have taken near-daily measurements of the Sun's global coronal magnetic field, a region of the Sun that has only been observed irregularly in the past. The resulting ...
Sep. 30, 2024 — A new program has simulated multiple satellites, collecting images of a cloud from many angles at the same time, which could help us to better understand what's happening inside the ...
Oct. 2, 2024 — Professional and amateur astronomers teamed up with artificial intelligence to find an unmatched stellar trio called TIC 290061484, thanks to cosmic 'strobe lights' captured by NASA's TESS ...
Oct. 1, 2024 — Are there planets beyond Earth where humans can live? The answer is maybe, according to physicists examining F-type star ...
Sep. 30, 2024 — Data from an international space mission is confirming decades worth of speculation about the galactic neighborhoods of supermassive black ...
Sep. 27, 2024 — The Cosmicflows team has been studying the movements of 56,000 galaxies, revealing a potential shift in the scale of our galactic basin of ...
Sep. 27, 2024 — Asteroid Ryugu possibly did not travel as far from its place of origin to its current near-Earth orbit as previously assumed. New research suggests that Ryugu was formed near Jupiter. Earlier studies ...
Sep. 27, 2024 — A crater-rich dwarf planet named Ceres located in the main asteroid belt between the orbits of Mars and Jupiter was long thought to be composed of a ...
Sep. 23, 2024 — Researchers find certain biosignature molecules may not indicate life is present, contrary to popular ...