Astronomy Picture of the Day

   [1]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.

                               2025 January 13
   [2]A morning sky is shown about a line of trees. In the sky is a faint
    comet. The comet is shown in better detailed in an inset image on the
    upper left. Please see the explanation for more detailed information.

                         Comet ATLAS Before Sunrise
   Image Credit & Copyright: [3]Petr Horalek / [4]Institute of Physics in
                                    Opava

   Explanation: Comet ATLAS is really bright now, but also really close to
   the Sun. Outside the glow of the Sun, [5]Comet C/2024 G3 (ATLAS) would
   be one of the more remarkable comet sights of recent years, reflecting
   about as much sunlight to Earth as [6]Comet Tsuchinshan-ATLAS did in
   October, and now [7]rivaling even planet [8]Venus. But the giant
   snowball is now [9]so close to the Sun that it can only be seen through
   the light of the early morning dawn or the early evening dusk. Today,
   [10]Comet ATLAS is at [11]perihelion -- its closest ever to the Sun.
   Although the future brightness of comets is [12]notoriously hard to
   predict, there is hope that [13]Comet ATLAS will survive its close pass
   near the Sun and [14]remain bright enough to be seen with the unaided
   eye over the next few days -- and possibly a good [15]camera comet for
   weeks. The [16]featured image was taken early yesterday morning near
   [17]Tornaľa, [18]Slovakia.

    Tomorrow: [19]Zoom APOD Lecture hosted by the Amateur Astronomers of
                           Association of New York
                        Tomorrow's picture: do north
     __________________________________________________________________

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    Authors & editors: [31]Robert Nemiroff ([32]MTU) & [33]Jerry Bonnell
                                 ([34]UMCP)
          NASA Official: Amber Straughn [35]Specific rights apply.
            [36]NASA Web Privacy, [37]Accessibility, [38]Notices;
                A service of: [39]ASD at [40]NASA / [41]GSFC,
                         [42]NASA Science Activation
                           & [43]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2501/CometAtlas_Horalek_960.jpg
   3. https://www.petrhoralek.com/#about-1
   4. https://www.slu.cz/phys/en/
   5. https://en.wikipedia.org/wiki/C/2024_G3_(ATLAS)
   6. https://apod.nasa.gov/apod/ap241019.html
   7. https://apod.nasa.gov/apod/ap230306.html
   8. https://science.nasa.gov/venus/
   9. https://theskylive.com/3dsolarsystem?obj=c2024g3
  10. https://earthsky.org/tonight/brightest-comet-of-2025-atlas-g3-southern-hemisphere/
  11. https://en.wikipedia.org/wiki/Apsis#Perihelion_and_aphelion
  12. https://t3.ftcdn.net/jpg/02/18/45/30/360_F_218453068_WRjhtH9MzO33Cb19K8acZI2VZvXueQ70.jpg
  13. https://www.newscientist.com/article/2463620-comet-that-could-shine-as-bright-as-venus-set-to-be-visible-from-earth/
  14. https://theskylive.com/c2024g3-info
  15. https://apod.nasa.gov/apod/ap240131.html
  16. https://www.petrhoralek.com/?p=25209
  17. https://en.wikipedia.org/wiki/Tornaľa
  18. https://en.wikipedia.org/wiki/Slovakia
  19. https://aaa.org/event/2025-astronomy-picture-of-the-day/
  20. https://apod.nasa.gov/apod/ap250112.html
  21. https://apod.nasa.gov/apod/archivepix.html
  22. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  23. https://apod.nasa.gov/apod/lib/aptree.html
  24. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  25. https://apod.nasa.gov/apod/calendar/allyears.html
  26. https://apod.com/feed.rss
  27. https://apod.nasa.gov/apod/lib/edlinks.html
  28. https://apod.nasa.gov/apod/lib/about_apod.html
  29. https://asterisk.apod.com/discuss_apod.php?date=250113
  30. https://apod.nasa.gov/apod/ap250114.html
  31. http://www.phy.mtu.edu/faculty/Nemiroff.html
  32. http://www.phy.mtu.edu/
  33. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  34. http://www.astro.umd.edu/
  35. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  36. https://www.nasa.gov/about/highlights/HP_Privacy.html
  37. https://www.nasa.gov/general/accessibility/
  38. https://www.nasa.gov/privacy/
  39. https://astrophysics.gsfc.nasa.gov/
  40. https://www.nasa.gov/
  41. https://www.nasa.gov/centers/goddard/
  42. https://science.nasa.gov/learners
  43. http://www.mtu.edu/