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Aug 4, 2021 · This visualization shows the new sample of oscillating red giant stars (colored dots) discovered by NASA’s Transiting Exoplanet Survey Satellite. The colors map to each 24-by-96-degree swath of the sky observed during the mission’s first two years.
- Francis Reddy
- Physical Characteristics
- Origin / Mythology
- How to See Betelgeuse
Betelgeuse is a colossal object — and a very bright one at that. As a red supergiant nearing the final phases of its life cycle, Betelgeuse has an estimated diameter around a thousand times that of the Sun, with an estimated absolute luminosity of 100,000 times the Sun. We’re talking about an object larger than the entire orbit of Jupiter — an amaz...
In Arabic, the name Betelgeuse can be translated as “shoulder of the giant.” Many cultures throughout history identified Orion as a hunter or giant. To the ancient Egyptians, the constellation was Osiris, a god and primeval king in the culture’s mythology. In some myths originating in the Americas, Betelgeuse represented a wound on Orion, perhaps b...
Finding the brilliant red giant is an easy task, thanks to its prime location in a prominent constellation. In the Northern Hemisphere, Orion begins to rise early in the evenings in December, and continues to dominate the southern winter sky until about April, when it begins to fade into the sunset. Betelgeuse is in the upper left-hand corner of Or...
Jun 10, 2024 · With data from NASA's flying telescope SOFIA, which retired in 2022, the team was able to detect the water, gas, and dust flowing in and around the system. Infrared spectral data shows that the giant star, which produces copious amounts of dust, returned to its normal behavior within only a couple years of the explosion, but also that it has ...
Feb 11, 2022 · Arcturus is a red giant star in the Northern Hemisphere of Earth 's sky and the brightest star in the constellation Boötes (the herdsman). Arcturus is also among the brightest stars that can be...
An illustration of the structure of the Sun and its possible future as a red giant, comparing their structure and size. A red giant is a star that has exhausted the supply of hydrogen in its core and has begun thermonuclear fusion of hydrogen in a shell surrounding the core.
Nov 9, 2023 · To become a red giant, a particular star must have between half our sun’s mass up to eight times our sun’s mass. Astronomers call such stars low- and intermediate-mass stars. So you can see ...
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Sep 21, 2023 · Mars may escape the Sun’s actual reach — it’s at the borderline — but that water will likely all be gone by the time the red giant star takes over the inner solar system. The gas giant...
