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Some stars may once have been more massive than they are today. It is likely that many large stars have suffered significant mass loss (perhaps as much as several tens of solar masses). This mass may have been expelled by superwinds: high velocity winds that are driven by the hot photosphere into interstellar space. The process forms an ...
Widely recognised as being among the largest known stars, [21] radius decreased to ~500 R ☉ during the 2020 great dimming event. [75] R Horologii: 630 [60] L/T eff: A red giant star with one of the largest ranges in brightness known of stars in the night sky visible to the unaided eye. Despite its large radius, it is less massive than the Sun.
Subsequent observations showed that R136 was located in the middle of a giant region of ionized interstellar hydrogen, known as an H II region, which was a center of intense star formation in the immediate vicinity of the observed stars. [7] In 1979, ESO's 3.6 m telescope was used to resolve R136 into three components; R136a, R136b, and R136c. [8]
Astronomers setting their sights halfway across the observable universe recently identified the largest amount of individual stars ever detected so far away – a feat once considered near-impossible.
17th brightest star in the night sky. Arcturus: 36.7 ± 0.2 [1] K1.5 III Fe−0.5 [5] 25.4 ± 0.2 [6] 1.08 ± 0.06 [6]-0.05 [4] Fourth-brightest star in the night sky, and the nearest red giant to Earth. Deneb Algedi (Delta Capricorni) 38.70 ± 0.09 [1] A7m III [7] 1.91 [8] 2 [8] 2.91 [7] The nearest white giant. Capella A 42.919 ± 0.049 [9 ...
The first star in the list, Godzilla [1] — an LBV in the distant Sunburst galaxy — is probably the brightest star ever observed, although it is believed to be undergoing a temporary episode of increased luminosity that has lasted at least seven years, in a similar manner to the Great Eruption of Eta Carinae that was witnessed in the 19th ...
The James Webb Space Telescope has captured new detailed portraits of 19 spiral galaxies filled with millions of stars and glowing gas and dust. ‘Mind-blowing’ new images reveal 19 galaxies ...
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