Rebecca Oppenheimer
banner
roppenhe.bsky.social
Rebecca Oppenheimer
@roppenhe.bsky.social
Astrophysicist, Writer, Degenerate
beccasubstellar.com or rebeccaoppenheimer.com
Pinned
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
And now for something completely different: For the best time call +1-303-499-7111

it's best to call at the top of the hour, but anytime works.
October 18, 2025 at 10:30 AM
One of the best stamps ever from the USPS. Thank you, @uspostal.bsky.social and @apwu.bsky.social
October 8, 2025 at 9:02 AM
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.
October 8, 2025 at 8:46 AM
This is a real storm. I love storms. It's the storms, not the harsh Sun, that create life.
October 8, 2025 at 8:16 AM
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.
September 28, 2025 at 8:41 AM
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.
September 28, 2025 at 8:12 AM
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.
September 25, 2025 at 8:44 AM
My robot vomited in my lab. It's ok. We cleaned it up.
September 25, 2025 at 8:20 AM
Regarding Gliese 229B, seen first in 1994 by me: a team lead by Jerry Xuan revealed it to be two strange worlds whipping around each other every twelve days as they orbit a nearby star with other companions or planets. Binary worlds are no longer sci-fi. They exist. www.caltech.edu/about/news/i...
It's Twins! Mystery of Famed Brown Dwarf Solved
Astronomers have discovered that a well-studied brown dwarf is in fact two that are orbiting closely around each other
www.caltech.edu
September 25, 2025 at 4:58 AM
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
September 24, 2025 at 7:51 AM