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Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

A picture of the unusual galaxy M82 is on the left, while the center is expanding and shown in a JWST image on the right. Many red-glowing filaments eminate out from the plane of the spiral galaxy. Please see the explanation for more detailed information.

The Cigar Galaxy from Hubble and Webb

Explanation: Something strange happened to this galaxy, but what? Known as the Cigar Galaxy and cataloged as M82 , red glowing gas and dust are being cast out from the center. Although this starburst galaxy was surely stirred up by a recent pass near its neighbor , large spiral galaxy M81 , this doesn't fully explain the source of the red-glowing outwardly expanding gas and dust . Evidence indicates that this material is being driven out by the combined emerging particle winds of many stars, together creating a galactic superwind . In the featured images , a Hubble Space Telescope image in visible light is shown on the left, while a James Webb Space Telescope image of the central region in infrared light is shown on the right. Detailed inspection of the new Webb image shows, unexpectedly, that this red-glowing dust is associated with hot plasma . Research into the nature of this strange nearby galaxy will surely continue.

Total Eclipse Imagery: Notable Submissions to APOD

Date April 15, 2024
Credit Image Credit: NASA , ESA , CSA , STScI , Alberto Bolatto ( UMD )
Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.