Cave Nebula (Caldwell 9) located 2,390 ly away in Cepheus. She's a beauty spanning a modest 35 ly The massive Cepheus Molecular Complex contains Caldwell 9, one of many active star forming regions in the Milky Way #Nature 🔭 #Photography #Science #WitchSky #Photo #NightSky #Astronomy

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Join us in Baltimore in March to celebrate the 30th anniversary (!) of STIS' installation onboard the Hubble Space Telescope. We'll also plan for the future of UV astronomy, including HWO and other UV missions! Abstract submission is open for our spring workshop: www.stsci.edu/contents/eve... #astro

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Galileo Second Generation is taking shape. 🛰️ A new signal generation module, designed to be reprogrammed in orbit, will bring greater flexibility, accuracy and resilience to Europe’s satellite navigation system. Read more: esa.int/Applications/Satellite_navigation/Galileo/New_brain_for_Galileo

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For the spooky season, I'll feature a Hallowtober deep-space object each week. Week three: the Boogeyman Nebula; its glowing eyes (reflection) and silhouetted body (dark dust) backlit by glowing red Hα emission. #astrophotography #astronomy #nature #longexposure #eastcoastkin #eck #photography

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Latest @xkcd.com, just in time for teaching angular momentum next week. 🎢 ⚛️ 🔭

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