Prof Stephen Serjeant · @stephenserjeant
1394 followers · 1261 posts · Server mas.to

I don’t care if the floaty rocks pan out, I’m loving the chat on social media because it’s science done in real time. Reminds me of the data claiming signatures from , when pretty much all the world experts joined a group of all things to discuss. Also of how expert thinking on (droplets vs aerosols) evolved in real time on 🐦.

#COVIDisAirborne #facebook #inflation #cmb #cosmicmicrowavebackground #bicep2 #superconductor #lk99

Last updated 1 year ago

Jim Donegan ✅ · @jimdonegan
1553 followers · 4634 posts · Server mastodon.scot
Jim Donegan ✅ · @jimdonegan
1539 followers · 4562 posts · Server mastodon.scot
Jim Donegan ✅ · @jimdonegan
1537 followers · 4560 posts · Server mastodon.scot
scandrof · @scandrof
304 followers · 5488 posts · Server aus.social

"On that morning, Olbers had come to a strange conclusion: based on all that was known about the Universe at that time, the night sky should not have been dark. In fact, the entire heavens should have been glowing as brightly as the Sun.

Olbers was not the first to note this paradox. But his name is the one we attach to it today. The enigma of the night sky’s darkness has echoed down the centuries from Olbers and the poet Edgar Allan Poe to 20th-century astronomers and space probes today."

Why is the sky dark at night? The 200-year history of a question that transformed our understanding of the Universe theconversation.com/why-is-the

#science #astronomy #physics #cosmology #bigbang #universe #radioastronomy #historyofscience #cosmicmicrowavebackground #edgarallanpoe

Last updated 1 year ago

Jim Donegan ✅ · @jimdonegan
1347 followers · 3396 posts · Server mastodon.scot
Jim Donegan ✅ · @jimdonegan
1311 followers · 3083 posts · Server mastodon.scot
Jim Donegan ✅ · @jimdonegan
1281 followers · 2986 posts · Server mastodon.scot
Daniel O’Neal · @MothmanJunior
149 followers · 340 posts · Server universeodon.com

Silly late-night hypothetical: if you traveled in the far enough back to when the universe was very young, then the radiation wouldn’t have had time to redshift so far and some of it would still be in the visible range, so all of space would appear luminous, right?

#tardis #cosmicmicrowavebackground #bigbang

Last updated 2 years ago

Jim Donegan ✅ · @jimdonegan
1235 followers · 2752 posts · Server mastodon.scot
GeekProjects News · @news
1 followers · 1104 posts · Server geekprojects.com
IT News · @itnewsbot
2379 followers · 241940 posts · Server schleuss.online
Boud · @boud
258 followers · 1554 posts · Server framapiaf.org

@stephenserjeant

This is a good chance to remind astro followers that the was discovered as a blackbody background temperature @2.3 K by McKellar [1] in *1941* using Adams' observations [2] of ().

With the ADS+Wikipedia, there's no need to blindly repeat the popular textbook myth that Penzias & Wilson discovered the ; they only *re*-discovered it.

[1] ui.adsabs.harvard.edu/abs/1941

[2] ui.adsabs.harvard.edu/abs/1941

#cosmicmicrowavebackground #diffuseinterstellarbands #dibs #cmb #cosmology #sciencehistory

Last updated 2 years ago