![Hubble observations of gas density compared to computer simulations](https://science.nasa.gov/wp-content/uploads/2023/04/hs-2015-26-a-print-jpg.webp?w=4096&format=png)
Hubble gas density
Top: Actual Hubble observations of gas density in the central portion of two galaxies. Bottom: Computer simulations of knots of star formation in the two galaxies show how gas falling into a galaxy's center is controlled by jets from the central black hole.
Credits: NASA/ESA/M. Donahue/Y. Li
Image CreditNASA/ESA/M. Donahue/Y. Li
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