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#astronomy

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Irregular Dwarf Galaxy Sextans A

Grand spiral galaxies often seem to get all the attention, flaunting young, bright, blue star clusters and pinkish star forming regions along graceful, symmetric spiral arms. But small galaxies form stars too, like irregular dwarf galaxy Sextans A. Its young star clusters and star forming regions are gathered into a gumdrop-shaped region a mere 5,000 light-years across. Seen toward the navigational constellation Sextans, the small galaxy lies some 4.5 million light-years distant. That puts it near the outskirts of the local group of galaxies, that includes the large, massive spirals Andromeda and our own Milky Way. Brighter Milky Way foreground stars appear spiky and yellowish in this colorful telescopic view of Sextans A.

@space@lemmy.science.social @science@lemmy.world @science@beehaw.org @space@beehaw.org @space@lemmy.world @science@lemmy.ml @science@newsmast.community @space@newsmast.community @space@lemmy.ml #space #science #nasa #astronomy

"A mere decade ago, astronomers knew of just 62 #moons around #Saturn. Today the ringed #planet boasts a staggering 274 official satellites. That’s more than any other world in the solar system—and far too many for most people to keep track of. Astronomer Edward Ashton is no exception, even though he has helped to discover 192 of them—he thinks that’s the total, anyway, after pausing to do some mental math."

#astronomy

scientificamerican.com/article

Saturn and its aurora
Scientific American · Saturn Has 274 Known Moons—Thanks in Large Part to This AstronomerVon Meghan Bartels