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However, the first dredge-up occurs soon after a star reaches the red supergiant phase and so this only means that Betelgeuse has been a red supergiant for at least a few thousand years. The best prediction is that Betelgeuse has already spent around 40,000 years as a red supergiant, [18] having left the main sequence perhaps one million years ago.
Type Ia supernova progenitors are white dwarf stars that are close to the Chandrasekhar limit of about 1.44 solar masses and are accreting matter from a binary companion star. The list includes massive Wolf–Rayet stars , which may become Type Ib/Ic supernovae , particularly oxygen-sequence (Wolf-Rayet WO) stars.
If Betelgeuse were too close to Earth, the eventual supernova could cause an extinction here on Earth. However, even at 530 light-years distance, our planet will still be safe from the eventual ...
Betelgeuse is a featured article; it (or a previous version of it) has been identified as one of the best articles produced by the Wikipedia community. Even so, if you can update or improve it, please do so. This article appeared on Wikipedia's Main Page as Today's featured article on November 26, 2012.
Betelgeuse, one of the brightest stars in the sky in the constellation Orion, has long puzzled astronomers due to its history of dimming and brightening, sometimes unexpectedly.
As Betelgeuse burns through fuel in its core, it has swollen to massive proportions, becoming a red supergiant, the latter phase of giant stars. When the star explodes, the event could be briefly ...
Leona is approximately 80 by 55 kilometres, hence is projected to have a silhouette of roughly 46 by 41 milliarcseconds (mas). [5] [23] Betelgeuse has an apparent size in the sky of about 45 mas, but its diffuse atmosphere may make it appear 55 mas in size. A preliminary analysis of results showed only a slight dimming, consistent with a ...
Betelgeuse's precise nature differs according to the medium he appears in. He has been depicted as a ghost, a demon and a supernatural monster, with motivations ranging from a love of chaos to a desire for human companionship. Each entry in the series involves Betelgeuse's interactions with Lydia Deetz, a goth fascinated with the "strange and ...