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But here’s the thing: because we have all of these older images of HH212 … we can see it moving 😱
That is, because the material is moving outwards from the protostar we can see the jet expand over time.
It’s easily visible in this 22 year timelapse that combines three VLT images from 2000, 2007, 2018, & then the 2022 JWST image.
Measuring the changes, we can determine the expansion speed as 50-150km/s in different parts of the outflow.
9/
This post from reddit is pretty on-point:
A software tester walks into a bar.
Runs into a bar.
Crawls into a bar.
Dances into a bar.
Flies into a bar. Jumps into a bar.
And orders:
a beer.
2 beers.
0 beers.
99999999 beers.
a lizard in a beer glass.
-1 beer.
"qwertyuiop" beers.
Testing complete.
A real customer walks into the bar and asks where the bathroom is.
The bar goes up in flames. 3/n
"This morning, UK research faces an unprecedented crisis. The secretary of state for science has given the chief executive of UK Research and Innovation, Ottoline Leyser, until the end of today to disband the newly formed equality, diversity and inclusion panel for the Research Excellence Framework."
https://www.researchprofessionalnews.com/rr-he-government-playbook-2023-10-no-good-outcomes/
🧵
[This post does not represent UKRIO, COPE, or EASE]
#AcademicFreedom #FreedomOfSpeech #UKpolitics #UKRI #ResearchPolicy #EDI #DEI #EquityDiversityInclusion
What is common knowledge in your field but shocks outsiders?
More than half the CO₂ emissions of the industrial age have been dumped into the atmosphere since 1990.
if you are talking about satellite constellations affecting ground-based astronomy, please consider looking at it through the lens of a global inequity in astronomy infrastructure.
whenever somebody says "let's put telescopes on a starship", they usually don't consider the countries that can't afford to do that. services like starlink are marketed as being good for the global south, but those are also the countries that will lose the most in astronomy.
Mark McCaughrean
Systems Approach
Dr. Divya 🍉 is offline
Matt Hodgkinson
David Ho
Daniel Lakens
Tixie Salander
Heloise F. S. 💻