They just removed it, with no explanation.

One of the best stamps ever from the USPS. Thank you, @uspostal.bsky.social and @apwu.bsky.social

I love stamps and the USPS. Here are two new examples of expedited or same day delivery stamps that feature astrophysics. These I got recently to move physical items swiftly through the mail, and the mail is one of the most fabulous things we have in the US.

This is a real storm. I love storms. It's the storms, not the harsh Sun, that create life.

Here is the poster that Paco presented about what it is like to be an astrodog, Chapter IV. He presented it in the front of the room at a conference in Delaware some years ago.
The Brown Dwarf-Exoplanet Connection Conference (BDExoCon) at the University of Delaware, Newark, October 2019.

Here is Paco, guarding PARVI, an instrument my team and I deployed and have now automated to understand what our solar system might look like from ~30 light years away. Paco is gone now, but he had true pride as our spokesdog for two projects. He had a paper published and went to Palomar 10 times.

Have you ever thought about the origin of the word pixel? In footnote 114 or so of my book, minor changes to come, before I get it out there, you might find something like this, well, fun! Let this post be a teaser.

My robot vomited in my lab. It's ok. We cleaned it up.

Hello people! I'm a professor and curator of astrophysics at the American Museum of Natural History. I study strange new worlds in the solar neighborhood. If you want to learn more about my work: beccasubstellar.com