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List of the largest known stars in the Milky Way Star name Solar radius (R ☉) Method [a] Notes Orbit of Saturn: 2,047 – 2,049.9 [10] [b] Reported for reference: Theoretical limit of star size (Milky Way) ≳1,700 [11] L/T eff: Estimated by measuring the fraction of red supergiants at higher luminosities in a large sample of supernova ...
Located in the Milky Way's extreme outer halo, far beyond the galactic disc. [6] Oldest star 2MASS J18082002−5104378: 2018 13.53 billion years [7] [8] List of oldest stars: Youngest Stars are being formed constantly in the universe so it is impossible to tell which star is the youngest.
A very large and luminous star, VY CMa is among the most extreme stars in the Milky Way and has an effective temperature below 4,000 K (3,730 °C; 6,740 °F). It occupies the upper-right hand corner of the HR diagram although its exact luminosity and temperature are uncertain.
Astronomers have long hypothesized that as a protostar grows to a size beyond 120 M ☉, something drastic must happen. [2] Although the limit can be stretched for very early Population III stars, and although the exact value is uncertain, if any stars still exist above 150–200 M ☉ they would challenge current theories of stellar evolution.
The Pistol Star is over 25 times more massive than the Sun, and is about 1.7 million times more luminous. Considered a candidate LBV, but variability has not been confirmed. V4029 Sagittarii; V905 Scorpii [20] HD 6884, [21] (R40 in SMC) HD 269700, [7] [22] (R116 in the LMC) LBV 1806-20 in the 1806-20 cluster on the other side of the Milky Way.
The supermassive black hole at the center of our Milky Way ... Astrophysicists behind the find claim the discovery not only will help scientists understand how stars can survive in extreme gravity ...
The discovery of the star in the Milky Way Galaxy suggests that the galaxy may be at least 3 billion years older than previously thought. [265] [266] [267] Several individual stars have been found in the Milky Way's halo with measured ages very close to the 13.80-billion-year age of the Universe.
Sagittarius A*, abbreviated as Sgr A* (/ ˈ s æ dʒ ˈ eɪ s t ɑːr / SADGE-AY-star [3]), is the supermassive black hole [4] [5] [6] at the Galactic Center of the Milky Way.Viewed from Earth, it is located near the border of the constellations Sagittarius and Scorpius, about 5.6° south of the ecliptic, [7] visually close to the Butterfly Cluster (M6) and Lambda Scorpii.