John Gizis
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johngizis.bsky.social
John Gizis
@johngizis.bsky.social
Astronomer, University of Delaware

Speaking for myself.
Snow! But not enough for a #UDel snow day.
December 5, 2025 at 1:21 PM
First time in three decades teaching at University of Delaware’s beautiful Memorial Hall in the center of campus. (Of course, I’m actually in the basement). #UDel
August 27, 2025 at 1:07 PM
University of Delaware astronomy watch party for Vera Rubin First Look is off to a great start. 🔭
June 23, 2025 at 2:51 PM
It was great to see the new telescope at Mt Cuba Astronomical Observatory in Delaware USA yesterday. 🔭
April 27, 2025 at 1:59 PM
Pleased with this
January 4, 2025 at 11:44 PM
Bluesky now has over 10 million users, and I was #679,572!
October 10, 2024 at 11:06 PM
April 3, 2024 at 11:00 PM
January 20, 2024 at 3:15 PM
I decided to read Oppenheimer & Snyder (1939) On Continued Gravitational Contraction (aka formation of black holes from stars) and I loved this line: "We have been unable to integrate these equations..." 🔭
October 30, 2023 at 1:56 PM
Top Hat!
September 16, 2023 at 2:15 AM
September 2, 2023 at 7:28 PM
Tomorrow's University of Delaware physics (biophysics!) colloquium is our own Prof. Ed Lyman on "Lipidomic Adaptations at Extreme Pressure".
August 29, 2023 at 3:14 PM
Another 🔭 Astronomy picture I saved from twitter, this one with a twist on the habitable zone concept. Sorry, I don’t know who to credit.
August 26, 2023 at 10:24 PM
I’ve got this same mug!
August 26, 2023 at 9:04 PM
August 24, 2023 at 8:31 PM