One of the best places to study stars is inside "open clusters," which are groups of stars that formed together from the same material and are bound together through gravity.
Astronomy
Aug 13, 2025
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Figuring out the ages of stars is fundamental to understanding many areas of astronomy—yet, it remains a challenge since stellar ages can't be ascertained through observation alone. So, astronomers at the University of ...
Astronomy
Jul 2, 2025
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A study published in Astronomy & Astrophysics has identified four previously unknown primordial open cluster (OC) groups in the Milky Way.
Astronomy
May 30, 2025
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Astronomers from Swinburne University in Australia and elsewhere have employed the Keck II telescope to investigate the globular cluster system of an ultra-diffuse galaxy designated NGC5846_UDG1. Results of the observations, ...
Black holes come in a range of sizes. Stellar mass black holes form from the collapse of massive stars, typically weighing between 5 and 100 times the mass of our sun, and are scattered throughout galaxies. At the other extreme ...
Astronomy
Apr 9, 2025
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A research team has proposed a new method to reconstruct the "family tree" of black holes. Published in The Astrophysical Journal, this research offers a way to infer the properties of the black hole progenitors of these ...
Astronomy
Dec 17, 2024
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Astronomers have employed the Hubble Space Telescope (HST) to observe an ultra-diffuse galaxy known as VCC 615. Results of the observational campaign, presented in a paper posted Dec. 2 to the preprint server arXiv, yield ...
A team of astrophysicists led by Núria Miret-Roig from the University of Vienna found that two methods for determining the age of stars measure different things: Isochronous measurement thereby determines the birth date ...
Astronomy
Nov 24, 2023
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Astronomers have discovered more than 200 distant variable stars known as RR Lyrae stars in the Milky Way's stellar halo. The most distant of these stars is more than a million light years from Earth, almost half the distance ...
Astronomy
Jan 9, 2023
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By analyzing the data from ESA's XMM-Newton and Gaia satellites, astronomers have investigated a young star cluster known as NGC 2264. Results of the study, published November 16 on the arXiv pre-print repository, shed more ...
