David Dickinson
banner
astrodave.bsky.social
David Dickinson
@astrodave.bsky.social
Writer, Space pundit, Skywatcher
Mercury passes perihelion today at 0.3075 AU from the Sun, and exits SOHO’s outer LASCO C3 field of view stage left; the hunt is now on to catch the innermost world low to the east at dawn, for its final apparition for 2025.
November 23, 2025 at 4:29 PM
Wow. Michael Jaeger posted this amazing fragmentation sequence of Comet C/2025 K1 ATLAS on Nov 20. Currently a month and a half past perihelion on October 8th, K1 ATLAS is a +10th magnitude comet now on its path outbound through the constellation Ursa Major. spaceweathergallery2.com/indiv_upload...
November 22, 2025 at 2:32 PM
Tonight: Io and Callisto both cast shadows on the cloud tops of Jupiter. The double-shadow event begins when 1:30 Universal Time (UT) when Io’s shadow joins Callisto’s, and ends when Io’s shadow quits Jove at 3:50 UT.
November 20, 2025 at 12:36 PM
The recent fragmation sequence seen here of Comet K1 ATLAS is pretty amazing -
www.virtualtelescope.eu/2025/11/13/c... -Courtesy of astronomer Gianluca Masi
November 14, 2025 at 12:23 AM
They did it: New Glenn's booster is back on Jacklyn:
November 13, 2025 at 9:09 PM
The cascade of energetic protons also kicked off a ground level event, still underway this AM. You can see how the hail of energetic particles temporarily blinded SOHO’s LASCO C3 imager:

Clearly, while massive sunspot group AR 4274 is now rotating away from us, it ain’t done with us yet.
November 12, 2025 at 3:58 PM