Star Clusters
JWST Sees a Milky Way-Like Galaxy Coming Together in the Early Universe
The gigantic galaxies we see in the Universe today, including our own Milky Way galaxy, started out far smaller. Mergers…
Astronomers Have a New Trick to Work out the Age of Stars
Determining the age of a star is surprisingly tricky and has wide error bars. It's only inside star clusters that…
How Old is That Star? Ask a Computer
A new machine learning technique could make it much easier to estimate the age of stellar populations.
JWST Sees Merging Galaxies Releasing the Light of a Trillion Suns
If we want to know what it'll look like in about 4.5 billion years when our galaxy merges with Andromeda,…
Trading Spaces: How Swapping Stars Create Hot Jupiters
Star clusters tend to host more hot Jupiters than average, but why? A team of astronomers have proposed a new…
The Brightest Star in the Sky, Sirius, was Hiding a Cluster of Stars. Found by Gaia
Thanks to the efforts of an amateur astronomer, the star cluster that was recently revealed by Gaia mission is now…
Hubble Telescope Celebrates 25 Years in Space With Spectacular New Image
Images from space don’t get any prettier than this. A new image from the Hubble Space Telescope was released today…
Too WISE to be Fooled by Dust: Over 300 New Star Clusters Discovered
Brazilian astronomers have discovered some 300+ star clusters that were largely overlooked owing to sizable obscuration by dust. The astronomers, from the Universidade…
‘Runaway’ Star Cluster Breaks Free from Distant Galaxy
We've discovered dozens of so-called "hypervelocity stars" — single stars that break the stellar speed limit. But today astronomers multiplied…
Hubble Observes Planet-“Polluted” Dead Stars In Hyades
For those of us who practice amateur astronomy, we're very familiar with the 150 light-year distant Hyades star cluster -…