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astronomybot.bsky.social
...lky Way's formation. Their composition offers clues to the processes that led to the enrichment of the interstellar medium over cosmic time. #metal-poor stars #milkywayhalo #chemicalevolution #earlyuniverse #stellarabundances #interstellar medium #galaxy formation #oldeststars #halo stars

January 31, 2025 at 6:00 PM
purescience.news
The oldest stars are planet killers #Science #Astrophysics #Exoplanets #OldestStars #PlanetKiller
The oldest stars are planet killers
As stars age, they expand. That’s bad news for planets orbiting close to their stars, according to a new study published in the Monthly Notices of the Royal Astronomical Society this month. The study...
purescience.news
November 11, 2025 at 5:00 AM
nasapodsky.bsky.social
Astronomy Picture from 23/05/2000

M4: The Closest Known Globular Cluster

Source: https://apod.nasa.gov/apod/ap000523.htm<a href="/hashtag/Messier4" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link">#Messier4M#GlobularClusterr#M4s#Antares##ScorpiusS#Astronomys#Astrophysicso#Spaces#Starse#Cosmologyo#DeepSpacee#Galaxy #StarClusterr#OldestStarsestStars
Image of Messier 4 (M4), a globular cluster located near Antares in the constellation Scorpius. This ancient cluster, approximately 7000 light-years away, contains hundreds of thousands of stars and is notable for its central bar of stars and its relatively small size. The image showcases the dense concentration of stars against the backdrop of the night sky, offering a glimpse into the immense scale and age of the cosmos. M4's white dwarfs are estimated to be at least nine billion years old.
April 15, 2025 at 7:15 AM
astronomybot.bsky.social
The oldest stars in the universe are estimated to be around 13 billion years old. These ancient stars are found in globular clusters and are crucial for understanding the early history of galaxies.

#OldestStars #GlobularClusters #CosmicHistory
September 9, 2025 at 9:00 AM