Fred Rasio
@fredrasio.bsky.social
📤 178
đź“Ą 185
đź“ť 9
Astrophysicist at CIERA
aasnova.org/2025/10/28/n...
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Not Their First Rodeo: Gravitational Wave Detectors Spot Merging Black Holes That Have Merged Before
The gravitational wave events GW241011 and GW241110 provide strong evidence for the growth of black holes through successive mergers.
https://aasnova.org/2025/10/28/not-their-first-rodeo-gravitational-wave-detectors-spot-merging-black-holes-that-have-merged-before/
2 months ago
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Betelgeuse’s Companion Star May Have Been Seen at Last
Finally found: using speckle imaging, researchers have spotted what is likely the predicted 1.6-solar-mass companion to the red supergiant Betelgeuse.
https://aasnova.org/2025/07/23/betelgeuses-companion-star-may-have-been-seen-at-last/
5 months ago
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Fred Rasio
AAS Nova
7 months ago
There’s more than one way to measure the age of a star in a cluster. But do different age-assigning methods agree?
aasnova.org/2025/06/04/s...
@ufresearch.bsky.social
đź”🧪
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Star-Crossed Clusters: When Ages Are at Odds
If you measure the age of a star using two different methods, do those ages agree? New research shows where our age estimates might be mismatched and what this disagreement could mean.
https://aasnova.org/2025/06/04/star-crossed-clusters-when-ages-are-at-odds/
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ApJ Letters exoALMA Focus Issue
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Monthly Roundup: A Deep View of Planet-Forming Disks with ALMA
Introducing exoALMA: a survey of 15 large, bright protoplanetary disks that has revealed gas structures that point to potential planet formation.
https://aasnova.org/2025/05/28/monthly-roundup-a-deep-view-of-planet-forming-disks-with-alma/?utm_source=mailpoet&utm_medium=email&utm_source_platform=mailpoet&utm_campaign=new-content-on-aas-nova-newsletter-post-title_1
7 months ago
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Spinning Up: Impacts of Stellar Collisions on Binary Black Hole Mergers
How do interactions binary black holes experience in dense star clusters impact the gravitational waves we detect on Earth? Recent simulations show that stellar collisions leave imprints on the masses...
https://aasnova.org/2025/04/04/spinning-up-impacts-of-stellar-collisions-on-binary-black-hole-mergers/?utm_source=mailpoet&utm_medium=email&utm_source_platform=mailpoet&utm_campaign=new-content-on-aas-nova-newsletter-post-title_1
9 months ago
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Fred Rasio
James Webb Space Telescope Discoveries Tracker
9 months ago
Stunning New Image of Globular Cluster M92 Released by Webb Telescope - Award Winning Best Telescope for Beginners -->
https://amzn.to/4iSP03S
Top 10 Award-Winning Telescopes -->
https://www.jameswebbdiscovery.com/top-10-telescopes-telescopeadvisor-awards-2025
#Astronomy
#AmazonAffiliate
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Stunning New Image of Globular Cluster M92 Released by Webb Telescope
Stunning New Image of Globular Cluster M92 Released by Webb Telescope
https://www.jameswebbdiscovery.com/discoveries/stunning-new-image-of-globular-cluster-m92-released-by-webb-telescope
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Fred Rasio
American Astronomical Society (AAS)
9 months ago
NASA has selected 24 new fellows for its prestigious NASA Hubble Fellowship Program. They will begin their programs in the fall at a US university or research center of their choosing.
aas.org/posts/news/2...
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Fred Rasio
The New York Times
9 months ago
Several Republicans joined Senate Democrats to pass a measure seeking to block some of President Trump’s tariffs on Canada.
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Senate Votes to Rescind Some Trump Tariffs, With G.O.P. Support
A measure to cancel some Canadian tariffs is all but certain to stall in the House. But with a handful of Republicans in favor, the vote sent a signal of opposition to the levies.
https://www.nytimes.com/2025/04/02/us/politics/senate-democrats-canada-tariffs-trump.html?smtyp=cur&smid=bsky-nytimes
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Fred Rasio
Sera Markoff
10 months ago
Thanks to
@fredrasio.bsky.social
, I was pleasantly surprised to learn that our first black hole image paper is in the top 5 most cited papers in the Astrophysical Journal Letters! I'm also sort of shocked that the top 5 cited papers are all about black holes or neutron stars, not exoplanets?! đź”🧪
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AAS Alarmed by Rumored Deep Cuts to NASA and National Science Foundation | American Astronomical Society
Recent reports have indicated that the White House may soon be proposing drastic cuts to future budgets for the National Science Foundation and the NASA Science Mission Directorate.
https://aas.org/posts/news/2025/03/aas-alarmed-rumored-deep-cuts-nasa-and-national-science-foundation?fbclid=IwZXh0bgNhZW0CMTEAAR0Ylp00oP10akBJSS8nJ6991o8ct_6BYosJhjOi1TST-1ML5vDmX8P6POc_aem_g8tExtc2fDZjSRSiErn0ag
10 months ago
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Fred Rasio
NPR
10 months ago
Dr. Frances Collins is leaving the National Institutes of Health, where he served as director from 2009 to 2021. The agency is facing cutbacks and restrictions under the Trump administration.
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Legendary former NIH director retires from embattled agency
Dr. Francis Collins is leaving the National Institutes of Health, where he served as director from 2009 to 2021. The agency is facing cutbacks and restrictions under the Trump administration.
https://www.npr.org/sections/shots-health-news/2025/03/01/g-s1-51514/francis-collins-nih-national-institutes-health-resigns
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Fred Rasio
Sean Carroll
11 months ago
The US government has been turned over to a group of extraordinarily ignorant people, and they are working to destroy science in this country. Cutting over half the NSF budget would save < 0.1% of the federal budget, but do incalculable harm. Simply heartbreaking.
arstechnica.com/science/2025...
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White House budget proposal could shatter the National Science Foundation
“This kind of cut would kill American science and boost China.”…
https://arstechnica.com/science/2025/02/white-house-budget-proposal-could-shatter-the-national-science-foundation/
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Fred Rasio
The Borowitz Report
12 months ago
Bernie Blasts Trump For Moving Inauguration Inside: “Wear Some Fucking Mittens”
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www.nytimes.com/2025/01/11/s...
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J. Fraser Stoddart, Who Developed Microscopic Machines, Dies at 82
He grew up playing with model construction sets. As an adult, he tinkered with molecules instead, creating nanomachines and winning a Nobel Prize.
https://www.nytimes.com/2025/01/11/science/j-fraser-stoddart-dead.html?smid=nytcore-ios-share
12 months ago
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ascl.net/wordpress/20...
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Sverre Aarseth, father of open source stellar dynamics software, has passed on to a higher orbit – ASCL.net
https://ascl.net/wordpress/2025/01/07/sverre-aarseth-father-of-open-source-stellar-dynamics-has-passed-on-to-a-higher-orbit/
12 months ago
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Fred Rasio
Tod Lauer
12 months ago
Unbelievable, but horrifically real
add a skeleton here at some point
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History-making probe attempts closest-ever approach to the sun | CNN
On Christmas Eve, the Parker Solar Probe was set to become the closest spacecraft to the sun, flying within a few million miles of the solar surface.
https://www.cnn.com/2024/12/23/science/parker-solar-probe-sun-close-approach?cid=ios_app
about 1 year ago
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From Discovery to the First Month of the Type II Supernova 2023ixf
aasnova.org/2023/09/27/g...
over 2 years ago
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