![Hubble view of M3 - a ball of thousands of stars.](https://science.nasa.gov/wp-content/uploads/2023/04/m3-jpg.webp?w=4096&format=png)
M3 Globular Cluster
The globular cluster M3 is notable for containing more variable stars than any other known cluster. The brightness of a variable star fluctuates with time.
Credits: NASA, ESA, STScI and A. Sarajedini (University of Florida)
Image CreditNASA, ESA, STScI and A. Sarajedini (University of Florida)
Size640x626px