Subj : Daily APOD Report
To   : All
From : Alan Ianson
Date : Sun May 22 2022 00:15:18

                        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.

                                 2022 May 22

                    A Large Tsunami Shock Wave on the Sun
           Image Credit: NSO/AURA/NSF and USAF Research Laboratory

   Explanation: Tsunamis this large don't happen on Earth. During 2006, a
   large solar flare from an Earth-sized sunspot produced a tsunami-type
   shock wave that was spectacular even for the Sun. Pictured here, the
   tsunami wave was captured moving out from active region AR 10930 by the
   Optical Solar Patrol Network (OSPAN) telescope in New Mexico, USA. The
   resulting shock wave, known technically as a Moreton wave, compressed
   and heated up gasses including hydrogen in the photosphere of the Sun,
   causing a momentarily brighter glow. The featured image was taken in a
   very specific red color emitted exclusively by hydrogen gas. The
   rampaging tsunami took out some active filaments on the Sun, although
   many re-established themselves later. The solar tsunami spread at
   nearly one million kilometers per hour, and circled the entire Sun in a
   matter of minutes.

                 Tomorrow's picture: andromeda now and again
     __________________________________________________________________

       Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
            NASA Official: Phillip Newman Specific rights apply.
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                      A service of: ASD at NASA / GSFC
                             & Michigan Tech. U.

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