Betelgeuse is normally one of the brightest, most recognizable stars of the winter sky, marking the left shoulder of the constellation Orion. But lately, it has been behaving strangely: an unprecedentedly large drop in its ...
Astronomy
Feb 8, 2021
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1414
Using asteroseismic techniques, an international team searched for pulsations in a subsample of five thousand stars, from the 32 thousand observed in short cadence in the first two sectors (roughly the first two months of ...
Astronomy
Jun 5, 2019
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57
For the first time, astronomers from MIT and elsewhere have observed a star pulsing in response to its orbiting planet.
Astronomy
Feb 14, 2017
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802
The movement of gas inside a star causes seismic waves which in turn cause irregularities on the star's surface. These 'earthquakes' (or pulsations) produce periodic variations in the brightness of a star, and the study of ...
Astronomy
Dec 2, 2015
0
10
An international team of astronomers at Stellar Astrophysics Centre in Aarhus, Denmark, have discovered a new exoplanet, christened "Kepler-410A b." The planet is about the size of Neptune and orbits the brightest star in ...
Astronomy
Jan 22, 2014
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0
Pulsars are among the most extreme stars in the universe: dense balls of matter which are heavier than the Sun, yet only a few tens of kilometers in diameter. They rotate rapidly (up to several hundred revolutions per second) ...
Astronomy
Oct 8, 2012
37
0
(PhysOrg.com) -- By discovering the first double star where a pulsating Cepheid variable and another star pass in front of one another, an international team of astronomers has solved a decades-old mystery. The rare alignment ...
Astronomy
Nov 24, 2010
5
0
(PhysOrg.com) -- An extensive study made with ESO's Very Large Telescope deepens a long-standing mystery in the study of stars similar to the Sun. Unusual year-long variations in the brightness of about one third of all Sun-like ...
Astronomy
Dec 7, 2009
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