Bruce Macintosh
banner
bmacastro.bsky.social
Bruce Macintosh
@bmacastro.bsky.social
Astronomer working on imaging extrasolar planets, instrumentation, and science policy. Spare time involves hiking with a golden retriever, and not playing enough boardgames.

Director, University of California Observatories, but opinions are my own. He/him
What's up with the barrier?

I assume the seats are just the usual 737max seats where the "cushions" are just a layer of spongy stuff spray painted on, but spaced slightly further apart.
November 29, 2025 at 11:24 PM
My life is complete
November 28, 2025 at 4:49 AM
Someone’s going to make the video, right? Please?
November 28, 2025 at 4:42 AM
What kind of slime would commit a crime like this
November 28, 2025 at 1:52 AM
Complicated adjustments - sending supportive thoughts
November 28, 2025 at 1:15 AM
GQuuux? And I’d love another Ariel?
November 27, 2025 at 6:35 AM
“Mobile battery pack to sustain critical field experiments “
November 23, 2025 at 2:43 AM
Ha! Ok, somewhow that’s utterly terrifying how completely I was fooled
November 22, 2025 at 3:58 PM
When you say “AI” here does that mean something that learned / was trained, or rebranding a PID controlle r while maybe adding an extra term or two?
November 22, 2025 at 3:48 PM
I would hope that trolling the chair of the Senate health commitee like this would negative consequences for Kennedy but that would require Cassidy to have a spine
November 20, 2025 at 2:59 AM
Scientists are also hard to have as players, so a science journalist like you is probably the very worst case.
November 19, 2025 at 6:01 PM
Special exception for people who work in quantum optics
November 13, 2025 at 3:24 PM
Nexus
November 8, 2025 at 5:37 AM
I won't be attend because my life/schedule is an ongoing nightmare, but I am very sorry to miss seeing you receive your award - congratulations again!
November 8, 2025 at 12:47 AM
(And as you note you'd also need to know how much nitrogen is in the home planet atmosphere; though if it's even remotely earth like it would be mostly nitrogen, and the difference between 60% N and 90% N would not be the biggest uncertainty in C14 production.)
November 6, 2025 at 8:53 PM
How old is this hypothetical alien spacecraft? Carbon 14 is good tens of thousands of years back - there are other radio-dating methods that work on longer timescales.
November 6, 2025 at 8:44 PM
It'd be somewhat hard. On Earth, carbon-14 is created by cosmic rays impacting the Earth's upper atmosphere. The cosmic ray rate could be different on another planet depending on where in the galaxy it is, strength of its magnetic field, etc, so the initial amount of C-14 could be different
November 6, 2025 at 8:44 PM