September 2025

  • The Fall 2025 Newsletter was published and you should have seen it in your mailbox or email inbox by now. You can also read it on the class website.
  • Don’t miss the beautiful 2025 Hanover Summer video and photos and a great student video of the completed Hop renovation. Links are on the home page.
  • Joe Leeper will be greatly missed by all who knew him. Please read his obituary.

Scroll down to learn more about this month's featured image from the James Webb Space Telescope and to see more site updates.

Click on the image to enlarge

The schematic artistic view of the Cosmic Owl (catalog ), consisting of twin collisional ring galaxies with binary AGN. One of the bipolar radio jets induce additional shocks in the collision front, where cold gas exists and vigorous star formation occurs. This target showcases the intricate interplay of merger-driven ring formation, synchronized AGN activity, jet-induced feedback, and shock-induced star formation, offering a rare glimpse into the dynamical multifarious processes shaping galaxy evolution in the Universe.

Recent Site Updates

September 2025

Topics Updated

Click here to open the monthly update details page. On the details page you will also have access to all monthly updates back to January 2023.

August 2025

Colliding galaxies

Topics Updated

Click here to open the monthly update details page. On the details page you will also have access to all monthly updates back to January 2023.

July 2025

Topics Updated

Click here to open the monthly update details page. On the details page you will also have access to all monthly updates back to January 2023.