Perhaps the greatest and most frustrating mystery in cosmology is the Hubble tension problem. Put simply, all the observational evidence we have points to a universe that began in a hot, dense state, and then expanded at ...
Astronomy
Jan 17, 2024
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Using NASA's Spitzer and WISE space telescopes, astronomers from the Steward Observatory and elsewhere have observed a well-known variable star designated RZ Piscium. They found that the star's circumstellar debris disk is ...
When you look up in the night sky and find your way to the North Star, you are looking at Polaris. Not only is it the brightest star in the Ursa Minor constellation (the Little Dipper), but its position relative to the north ...
Astronomy
Sep 11, 2023
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189
An international team of astronomers has investigated EX Lupi—a young T-Tauri star in the constellation of Lupus and an archetype of EXor stars. The study, presented in a paper published August 23 on the pre-print server ...
By analyzing the data from various ground-based facilities and space telescopes, European astronomers have investigated the nature of a peculiar object known as PM 1-322. As a result, they found evidence indicating that PM ...
The universe consists of hundreds of billions of galaxies, and for nearby galaxies, distances are mainly measured by classical Cepheids and RR Lyrae (RR Lyr) stars.
Astronomy
Jun 20, 2023
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79
The bright, red star Betelgeuse in the constellation Orion has shown some unexpected behavior. In late 2019 and 2020 it became fainter than we had ever seen it—at least in records going back more than a century. Briefly ...
Astronomy
Jun 12, 2023
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315
Using the Nanshan One-meter Wide-field Telescope (NOWT), astronomers from China have performed a photometric survey of the old open cluster NGC 188. In result, they identified many variable stars, one of which was detected ...
A low-cost, high-value observatory with a passing resemblance to a garden shed has been set up in the grounds of the University of Bath. The observatory is proving to be a game-changing experimental tool for undergraduates ...
Astronomy
Apr 21, 2023
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Using data from NASA's Kepler spacecraft, astronomers from the Pedagogical University of Cracow, Poland, and elsewhere have detected 278 variable stars in the open cluster NGC 6791 and its surroundings. The finding was reported ...
