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  3. Comet C/2025 R3 (PanSTARRS) is now putting on a show, visible low in the predawn sky, with binoculars or telescope.

Comet C/2025 R3 (PanSTARRS) is now putting on a show, visible low in the predawn sky, with binoculars or telescope.

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  • akasci@fosstodon.orgA akasci@fosstodon.org

    Comet R3 (PanSTARRS) featured on NASA APOD yesterday.

    This beautiful image of the comet sporting a tail extending over 10 degrees, was taken on April 9 from Sion, Switzerland with the big mountain Bietschhorn on the left.

    The composite image was taken with a 120-300 lens, set at 180mm.

    https://apod.nasa.gov/apod/ap260412.html
    https://www.instagram.com/p/DW6sYW2DBWm/
    Image Credit & Copyright: José Rodrigues
    4/n

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    akasci@fosstodon.orgA This user is from outside of this forum
    akasci@fosstodon.orgA This user is from outside of this forum
    akasci@fosstodon.org
    wrote on last edited by
    #10

    Comet C/2025 R3 (PanSTARRS) artistically captured by astrophotographer Petr Horálek over the Seč Lake, Czech Republic.

    The Andromeda Galaxy can be seen on the left in this pic taken just before dawn.

    https://www.petrhoralek.com/?p=26091
    Check out Petr's other works at https://www.petrhoralek.com/ and
    https://www.instagram.com/petrhoralek/?hl=en
    5/n

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    akasci@fosstodon.orgA 1 Reply Last reply
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    • akasci@fosstodon.orgA akasci@fosstodon.org

      Comet C/2025 R3 (PanSTARRS) artistically captured by astrophotographer Petr Horálek over the Seč Lake, Czech Republic.

      The Andromeda Galaxy can be seen on the left in this pic taken just before dawn.

      https://www.petrhoralek.com/?p=26091
      Check out Petr's other works at https://www.petrhoralek.com/ and
      https://www.instagram.com/petrhoralek/?hl=en
      5/n

      Link Preview Image
      akasci@fosstodon.orgA This user is from outside of this forum
      akasci@fosstodon.orgA This user is from outside of this forum
      akasci@fosstodon.org
      wrote on last edited by
      #11

      Comet C/2025 R3 (PanSTARRS) is featured in today's NASA APOD.

      This image was taken by astrophotographer Haythem Hamdi, in Rhode Island, USA, on April 12. It captures the comet’s glowing coma and flowing tail shaped by the solar wind. Haythem used an Askar 80PHQ refractor and reducer to get a wide field of view for framing the long tail.

      https://apod.nasa.gov/apod/ap260414.html
      https://www.instagram.com/hamdi_astrophotography/
      Image Credit & Copyright: Haythem Hamdi
      6/n

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      • akasci@fosstodon.orgA akasci@fosstodon.org

        Comet C/2025 R3 (PanSTARRS) is featured in today's NASA APOD.

        This image was taken by astrophotographer Haythem Hamdi, in Rhode Island, USA, on April 12. It captures the comet’s glowing coma and flowing tail shaped by the solar wind. Haythem used an Askar 80PHQ refractor and reducer to get a wide field of view for framing the long tail.

        https://apod.nasa.gov/apod/ap260414.html
        https://www.instagram.com/hamdi_astrophotography/
        Image Credit & Copyright: Haythem Hamdi
        6/n

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        akasci@fosstodon.orgA This user is from outside of this forum
        akasci@fosstodon.orgA This user is from outside of this forum
        akasci@fosstodon.org
        wrote on last edited by
        #12

        Check out this earlier thread on why the coma of most comets, including that of Comet C/2025 R3 (PanSTARRS), glows green.

        “Look deep into nature, and then you will understand everything better.”
        ― Albert Einstein

        https://fosstodon.org/@AkaSci/112252445899850627
        7/n

        akasci@fosstodon.orgA 1 Reply Last reply
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        • akasci@fosstodon.orgA akasci@fosstodon.org

          Check out this earlier thread on why the coma of most comets, including that of Comet C/2025 R3 (PanSTARRS), glows green.

          “Look deep into nature, and then you will understand everything better.”
          ― Albert Einstein

          https://fosstodon.org/@AkaSci/112252445899850627
          7/n

          akasci@fosstodon.orgA This user is from outside of this forum
          akasci@fosstodon.orgA This user is from outside of this forum
          akasci@fosstodon.org
          wrote on last edited by
          #13

          Comet C/2025 R3 (PanSTARRS) with its long wispy tail looming over the misty mountains of Nagano Prefecture, Hiratani Village, Japan.

          Date: April 13, 2026
          Camera: Canon EOS 6D Mark II
          Lens: Samyang 135mm f/2.0
          Setting : ISO400
          60sx40shots

          https://www.instagram.com/zoe_zoe0718
          Credit: Zoe
          8/n

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          akasci@fosstodon.orgA 1 Reply Last reply
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          • akasci@fosstodon.orgA akasci@fosstodon.org

            Comet C/2025 R3 (PanSTARRS) with its long wispy tail looming over the misty mountains of Nagano Prefecture, Hiratani Village, Japan.

            Date: April 13, 2026
            Camera: Canon EOS 6D Mark II
            Lens: Samyang 135mm f/2.0
            Setting : ISO400
            60sx40shots

            https://www.instagram.com/zoe_zoe0718
            Credit: Zoe
            8/n

            Link Preview Image
            akasci@fosstodon.orgA This user is from outside of this forum
            akasci@fosstodon.orgA This user is from outside of this forum
            akasci@fosstodon.org
            wrote last edited by
            #14

            This beautiful image of Comet C/2025 R3 (PanSTARRS) was taken by astrophotographer Marina Prol, early morning on April 14th, from Ayagaures viewpoint in the southern part of Gran Canaria.

            https://spaceweathergallery2.com/indiv_upload.php?upload_id=232320
            https://www.marinaprol.com/astroandnightscapes
            9/n

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            akasci@fosstodon.orgA 1 Reply Last reply
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            • akasci@fosstodon.orgA akasci@fosstodon.org

              This beautiful image of Comet C/2025 R3 (PanSTARRS) was taken by astrophotographer Marina Prol, early morning on April 14th, from Ayagaures viewpoint in the southern part of Gran Canaria.

              https://spaceweathergallery2.com/indiv_upload.php?upload_id=232320
              https://www.marinaprol.com/astroandnightscapes
              9/n

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              akasci@fosstodon.orgA This user is from outside of this forum
              akasci@fosstodon.orgA This user is from outside of this forum
              akasci@fosstodon.org
              wrote last edited by
              #15

              Post #10 got disconnected from the thread. This is one way to reconnect it and continue the thread.

              https://fosstodon.org/@AkaSci/116421250979446601
              10/n

              akasci@fosstodon.orgA 1 Reply Last reply
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              • akasci@fosstodon.orgA akasci@fosstodon.org

                Post #10 got disconnected from the thread. This is one way to reconnect it and continue the thread.

                https://fosstodon.org/@AkaSci/116421250979446601
                10/n

                akasci@fosstodon.orgA This user is from outside of this forum
                akasci@fosstodon.orgA This user is from outside of this forum
                akasci@fosstodon.org
                wrote last edited by
                #16

                Comet C/2025 R3 beautifully captured by astrophotographer Luc Perrot on April 16 from a volcanic peak overlooking France's Reunion Island, located in the Southern hemisphere, east of Madagascar.

                Featured on NASA APOD on April 18.

                https://apod.nasa.gov/apod/ap260418.html
                Check out Luc's other works at https://www.lucperrot.fr/
                11/n

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                • R relay@relay.infosec.exchange shared this topic
                • akasci@fosstodon.orgA akasci@fosstodon.org

                  Comet C/2025 R3 beautifully captured by astrophotographer Luc Perrot on April 16 from a volcanic peak overlooking France's Reunion Island, located in the Southern hemisphere, east of Madagascar.

                  Featured on NASA APOD on April 18.

                  https://apod.nasa.gov/apod/ap260418.html
                  Check out Luc's other works at https://www.lucperrot.fr/
                  11/n

                  Link Preview Image
                  akasci@fosstodon.orgA This user is from outside of this forum
                  akasci@fosstodon.orgA This user is from outside of this forum
                  akasci@fosstodon.org
                  wrote last edited by
                  #17

                  Looks like Comet C/2025 R3 (PanSTARRS) survived its trip around the Sun and is now on its return trip out of the Solar System.

                  The comet makes its closest approach to Earth today.

                  These are images captured by the ESA/NASA Solar and Heliospheric Observatory (SOHO) LASCO C3 instrument.

                  LASCO = Large Angle and Spectrometric COronagraph.

                  Animation at https://soho.nascom.nasa.gov/data/realtime/mpeg/
                  12/n

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                  akasci@fosstodon.orgA ewen@social.ewenbell.comE adamshostack@infosec.exchangeA 4 Replies Last reply
                  0
                  • akasci@fosstodon.orgA akasci@fosstodon.org

                    Looks like Comet C/2025 R3 (PanSTARRS) survived its trip around the Sun and is now on its return trip out of the Solar System.

                    The comet makes its closest approach to Earth today.

                    These are images captured by the ESA/NASA Solar and Heliospheric Observatory (SOHO) LASCO C3 instrument.

                    LASCO = Large Angle and Spectrometric COronagraph.

                    Animation at https://soho.nascom.nasa.gov/data/realtime/mpeg/
                    12/n

                    Link Preview Image
                    akasci@fosstodon.orgA This user is from outside of this forum
                    akasci@fosstodon.orgA This user is from outside of this forum
                    akasci@fosstodon.org
                    wrote last edited by
                    #18

                    Video from ESA/NASA Solar and Heliospheric Observatory (SOHO) LASCO C3 with comet C/2025 R3 (PanSTARRS) in its field of view, uploaded to YouTube by Bum-Suk Yeom (염범석).

                    https://www.youtube.com/watch?v=LVGQv62DvnQ
                    13/n

                    1 Reply Last reply
                    0
                    • akasci@fosstodon.orgA akasci@fosstodon.org

                      Looks like Comet C/2025 R3 (PanSTARRS) survived its trip around the Sun and is now on its return trip out of the Solar System.

                      The comet makes its closest approach to Earth today.

                      These are images captured by the ESA/NASA Solar and Heliospheric Observatory (SOHO) LASCO C3 instrument.

                      LASCO = Large Angle and Spectrometric COronagraph.

                      Animation at https://soho.nascom.nasa.gov/data/realtime/mpeg/
                      12/n

                      Link Preview Image
                      ewen@social.ewenbell.comE This user is from outside of this forum
                      ewen@social.ewenbell.comE This user is from outside of this forum
                      ewen@social.ewenbell.com
                      wrote last edited by
                      #19
                      @AkaSci

                      How cool are those images though! It's like watching a solar system printed onto a CDrom 🙂
                      1 Reply Last reply
                      0
                      • akasci@fosstodon.orgA akasci@fosstodon.org

                        Looks like Comet C/2025 R3 (PanSTARRS) survived its trip around the Sun and is now on its return trip out of the Solar System.

                        The comet makes its closest approach to Earth today.

                        These are images captured by the ESA/NASA Solar and Heliospheric Observatory (SOHO) LASCO C3 instrument.

                        LASCO = Large Angle and Spectrometric COronagraph.

                        Animation at https://soho.nascom.nasa.gov/data/realtime/mpeg/
                        12/n

                        Link Preview Image
                        akasci@fosstodon.orgA This user is from outside of this forum
                        akasci@fosstodon.orgA This user is from outside of this forum
                        akasci@fosstodon.org
                        wrote last edited by
                        #20

                        The ESA/NASA Solar and Heliospheric Observatory (SOHO), launched on Dec. 2, 1995, has been studying the Sun for over 30 years, from its perch in a Halo orbit around the Sun-Earth Lagrange point L1.

                        With its 12 instruments, SOHO allows scientists to study the Sun’s internal structure and dynamics, the chromosphere, the corona, and solar particles. It has discovered over 5,000 comets.

                        https://science.nasa.gov/mission/soho/
                        https://en.wikipedia.org/wiki/Solar_and_Heliospheric_Observatory
                        13/n

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                        akasci@fosstodon.orgA 1 Reply Last reply
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                        • akasci@fosstodon.orgA akasci@fosstodon.org

                          Looks like Comet C/2025 R3 (PanSTARRS) survived its trip around the Sun and is now on its return trip out of the Solar System.

                          The comet makes its closest approach to Earth today.

                          These are images captured by the ESA/NASA Solar and Heliospheric Observatory (SOHO) LASCO C3 instrument.

                          LASCO = Large Angle and Spectrometric COronagraph.

                          Animation at https://soho.nascom.nasa.gov/data/realtime/mpeg/
                          12/n

                          Link Preview Image
                          adamshostack@infosec.exchangeA This user is from outside of this forum
                          adamshostack@infosec.exchangeA This user is from outside of this forum
                          adamshostack@infosec.exchange
                          wrote last edited by
                          #21

                          @AkaSci I’ve been busy, hadn’t tracked it, but this looks like decent info on how to try to see it: https://starwalk.space/en/news/comet-c2025-r3-panstarrs

                          1 Reply Last reply
                          0
                          • akasci@fosstodon.orgA akasci@fosstodon.org

                            The ESA/NASA Solar and Heliospheric Observatory (SOHO), launched on Dec. 2, 1995, has been studying the Sun for over 30 years, from its perch in a Halo orbit around the Sun-Earth Lagrange point L1.

                            With its 12 instruments, SOHO allows scientists to study the Sun’s internal structure and dynamics, the chromosphere, the corona, and solar particles. It has discovered over 5,000 comets.

                            https://science.nasa.gov/mission/soho/
                            https://en.wikipedia.org/wiki/Solar_and_Heliospheric_Observatory
                            13/n

                            Link Preview Image
                            akasci@fosstodon.orgA This user is from outside of this forum
                            akasci@fosstodon.orgA This user is from outside of this forum
                            akasci@fosstodon.org
                            wrote last edited by
                            #22

                            The horror! The horror!

                            How billionaires, one in particular, are destroying the night sky and astronomy.

                            This is a pic of Comet C/2025 R3 (PanSTARRS), trapped in a celestial cage of light streaks formed by LEO satellites racing across the sky in this 10-minute exposure image.

                            This is with ~10,000 orbiting satellites. Now, imagine a million of them, each with a solar array ~10x larger.
                            😡 🛰️
                            https://apod.nasa.gov/apod/ap260427.html
                            Image Credit & Copyright: Uli Fehr
                            14/n

                            Link Preview Image
                            kevinrns@mstdn.socialK huntingdon@mstdn.socialH Z jigmedatse@social.jigmedatse.comJ kigelia@mastodon.onlineK 8 Replies Last reply
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                            • akasci@fosstodon.orgA akasci@fosstodon.org

                              The horror! The horror!

                              How billionaires, one in particular, are destroying the night sky and astronomy.

                              This is a pic of Comet C/2025 R3 (PanSTARRS), trapped in a celestial cage of light streaks formed by LEO satellites racing across the sky in this 10-minute exposure image.

                              This is with ~10,000 orbiting satellites. Now, imagine a million of them, each with a solar array ~10x larger.
                              😡 🛰️
                              https://apod.nasa.gov/apod/ap260427.html
                              Image Credit & Copyright: Uli Fehr
                              14/n

                              Link Preview Image
                              kevinrns@mstdn.socialK This user is from outside of this forum
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                              kevinrns@mstdn.social
                              wrote last edited by
                              #23

                              @AkaSci

                              Stop Prison Earth.

                              1 Reply Last reply
                              0
                              • akasci@fosstodon.orgA akasci@fosstodon.org

                                The horror! The horror!

                                How billionaires, one in particular, are destroying the night sky and astronomy.

                                This is a pic of Comet C/2025 R3 (PanSTARRS), trapped in a celestial cage of light streaks formed by LEO satellites racing across the sky in this 10-minute exposure image.

                                This is with ~10,000 orbiting satellites. Now, imagine a million of them, each with a solar array ~10x larger.
                                😡 🛰️
                                https://apod.nasa.gov/apod/ap260427.html
                                Image Credit & Copyright: Uli Fehr
                                14/n

                                Link Preview Image
                                huntingdon@mstdn.socialH This user is from outside of this forum
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                                huntingdon@mstdn.social
                                wrote last edited by
                                #24

                                @AkaSci

                                The Tholian web. If only it were Elmo caught in interdimensional space, we'd all breathe easier.

                                1 Reply Last reply
                                0
                                • akasci@fosstodon.orgA akasci@fosstodon.org

                                  The horror! The horror!

                                  How billionaires, one in particular, are destroying the night sky and astronomy.

                                  This is a pic of Comet C/2025 R3 (PanSTARRS), trapped in a celestial cage of light streaks formed by LEO satellites racing across the sky in this 10-minute exposure image.

                                  This is with ~10,000 orbiting satellites. Now, imagine a million of them, each with a solar array ~10x larger.
                                  😡 🛰️
                                  https://apod.nasa.gov/apod/ap260427.html
                                  Image Credit & Copyright: Uli Fehr
                                  14/n

                                  Link Preview Image
                                  Z This user is from outside of this forum
                                  Z This user is from outside of this forum
                                  zieglarnatta@mastodon.social
                                  wrote last edited by
                                  #25

                                  Right now, starlink has the most, but Leo is catching up. Imagine the scene where Wally & Eve punching through the dead satellite field with their rocket? We're already there. 🤬😤😡
                                  https://satellitemap.space/

                                  1 Reply Last reply
                                  0
                                  • akasci@fosstodon.orgA akasci@fosstodon.org

                                    The horror! The horror!

                                    How billionaires, one in particular, are destroying the night sky and astronomy.

                                    This is a pic of Comet C/2025 R3 (PanSTARRS), trapped in a celestial cage of light streaks formed by LEO satellites racing across the sky in this 10-minute exposure image.

                                    This is with ~10,000 orbiting satellites. Now, imagine a million of them, each with a solar array ~10x larger.
                                    😡 🛰️
                                    https://apod.nasa.gov/apod/ap260427.html
                                    Image Credit & Copyright: Uli Fehr
                                    14/n

                                    Link Preview Image
                                    jigmedatse@social.jigmedatse.comJ This user is from outside of this forum
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                                    jigmedatse@social.jigmedatse.com
                                    wrote last edited by
                                    #26

                                    @AkaSci Impressive, and unwelcome...

                                    1 Reply Last reply
                                    0
                                    • akasci@fosstodon.orgA akasci@fosstodon.org

                                      The horror! The horror!

                                      How billionaires, one in particular, are destroying the night sky and astronomy.

                                      This is a pic of Comet C/2025 R3 (PanSTARRS), trapped in a celestial cage of light streaks formed by LEO satellites racing across the sky in this 10-minute exposure image.

                                      This is with ~10,000 orbiting satellites. Now, imagine a million of them, each with a solar array ~10x larger.
                                      😡 🛰️
                                      https://apod.nasa.gov/apod/ap260427.html
                                      Image Credit & Copyright: Uli Fehr
                                      14/n

                                      Link Preview Image
                                      kigelia@mastodon.onlineK This user is from outside of this forum
                                      kigelia@mastodon.onlineK This user is from outside of this forum
                                      kigelia@mastodon.online
                                      wrote last edited by
                                      #27

                                      @AkaSci that is a great and saddening picture.

                                      I love seeing people’s long exposure pictures of the night sky. Seems like those sort of images are going to become a thing of the past.

                                      Although I am sure some AI company will offer a tool to strip the satellite tracks away. Thus annoying me a little bit more.

                                      1 Reply Last reply
                                      0
                                      • akasci@fosstodon.orgA akasci@fosstodon.org

                                        The horror! The horror!

                                        How billionaires, one in particular, are destroying the night sky and astronomy.

                                        This is a pic of Comet C/2025 R3 (PanSTARRS), trapped in a celestial cage of light streaks formed by LEO satellites racing across the sky in this 10-minute exposure image.

                                        This is with ~10,000 orbiting satellites. Now, imagine a million of them, each with a solar array ~10x larger.
                                        😡 🛰️
                                        https://apod.nasa.gov/apod/ap260427.html
                                        Image Credit & Copyright: Uli Fehr
                                        14/n

                                        Link Preview Image
                                        kassander@norden.socialK This user is from outside of this forum
                                        kassander@norden.socialK This user is from outside of this forum
                                        kassander@norden.social
                                        wrote last edited by
                                        #28

                                        @AkaSci They could just turn off these lights!? 🤨

                                        saskboy@mastodon.ccS 1 Reply Last reply
                                        0
                                        • kassander@norden.socialK kassander@norden.social

                                          @AkaSci They could just turn off these lights!? 🤨

                                          saskboy@mastodon.ccS This user is from outside of this forum
                                          saskboy@mastodon.ccS This user is from outside of this forum
                                          saskboy@mastodon.cc
                                          wrote last edited by
                                          #29

                                          @kassander @AkaSci it's reflected sunlight.

                                          1 Reply Last reply
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