Peter Brown
@pgbrown2.bsky.social
Meteor astronomer and planetary scientist.
Starlink-1066 re-entry on Sep 23 at 0605 UT imaged by satellite tracking cameras of a joint #Westernu and #DRDC project. Breakup is shown over heights 65 – 60 km. Any surviving debris likely landed in parts of NE Sask, N Man or Ontario. Analysis by @meteordoc. #starlink
September 26, 2025 at 3:01 PM
Reposted by Peter Brown
A bolide, or large meteor, broke up over South Carolina and Georgia earlier today, creating a fireball that was bright enough to be captured by GOES-19.
June 26, 2025 at 8:27 PM
A bolide, or large meteor, broke up over South Carolina and Georgia earlier today, creating a fireball that was bright enough to be captured by GOES-19.
Reposted by Peter Brown
Join #WesternU as our next Canada Excellence Research Chair ( #CERC). The awards provide for international researchers to lead prestigious research programs at Western and contribute to Canada's excellence in research & innovation.
Application review begins June 4, 2025.
www.uwo.ca/research/cer...
Application review begins June 4, 2025.
www.uwo.ca/research/cer...
May 7, 2025 at 8:04 PM
Join #WesternU as our next Canada Excellence Research Chair ( #CERC). The awards provide for international researchers to lead prestigious research programs at Western and contribute to Canada's excellence in research & innovation.
Application review begins June 4, 2025.
www.uwo.ca/research/cer...
Application review begins June 4, 2025.
www.uwo.ca/research/cer...
For those who may have been looking for a change of scene to Canada: uwo.ca/research/cer...
May 5, 2025 at 7:56 PM
For those who may have been looking for a change of scene to Canada: uwo.ca/research/cer...
Reposted by Peter Brown
Nature Scientific Reports has finally decided to retract the faulty paper that claimed a comet destroyed Sodom. The people behind the Younger Dryas Impact Hypothesis are hopping mad. cosmictusk.com/nature-scien...
Nature: Scientific Retractions - The Cosmic Tusk
One of the most important and widely-read scientific papers of all time has been retracted, following complaints that are immaterial to it's conclusions.
cosmictusk.com
April 10, 2025 at 11:07 PM
Nature Scientific Reports has finally decided to retract the faulty paper that claimed a comet destroyed Sodom. The people behind the Younger Dryas Impact Hypothesis are hopping mad. cosmictusk.com/nature-scien...
Reposted by Peter Brown
Wow! Big meteor in Sydney. There are a few DFN cameras there, so we should soon know whether to expect any meteorites from that event. Was it over land?
If you happened to be awake around 02:46:45 early Saturday morning and were looking south, you would have seen a bright fireball over our city!
You can watch the 10s video here: www.youtube.com/watch?v=3HSe...
Footage from WebCamSydney
#Sydney #Meteor #Fireball
You can watch the 10s video here: www.youtube.com/watch?v=3HSe...
Footage from WebCamSydney
#Sydney #Meteor #Fireball
April 6, 2025 at 12:03 PM
Wow! Big meteor in Sydney. There are a few DFN cameras there, so we should soon know whether to expect any meteorites from that event. Was it over land?
Reposted by Peter Brown
Share with US students who had their offers of admission withdrawn for PhD programs:
Apply to Canada. Check out Canadian professors, and contact us. Our system works differently here, and we are all still, technically, able to accept students for Fall 2025.
Apply to Canada. Check out Canadian professors, and contact us. Our system works differently here, and we are all still, technically, able to accept students for Fall 2025.
March 13, 2025 at 12:44 AM
Share with US students who had their offers of admission withdrawn for PhD programs:
Apply to Canada. Check out Canadian professors, and contact us. Our system works differently here, and we are all still, technically, able to accept students for Fall 2025.
Apply to Canada. Check out Canadian professors, and contact us. Our system works differently here, and we are all still, technically, able to accept students for Fall 2025.
Reposted by Peter Brown
Today on the #arXiv :
Chow & @pgbrown2.bsky.social 2025, "Decameter-sized Earth impactors -- I: Orbital properties" - arxiv.org/abs/2501.03308
Surveying the largest Earth impacts of the past 30 years.
Chow & @pgbrown2.bsky.social 2025, "Decameter-sized Earth impactors -- I: Orbital properties" - arxiv.org/abs/2501.03308
Surveying the largest Earth impacts of the past 30 years.
Decameter-sized Earth impactors -- I: Orbital properties
Numerous decameter-sized asteroids have been observed impacting Earth as fireballs. These objects can have impact energies equivalent to hundreds of kilotons of TNT, posing a hazard if they impact pop...
arxiv.org
January 8, 2025 at 7:17 AM
Today on the #arXiv :
Chow & @pgbrown2.bsky.social 2025, "Decameter-sized Earth impactors -- I: Orbital properties" - arxiv.org/abs/2501.03308
Surveying the largest Earth impacts of the past 30 years.
Chow & @pgbrown2.bsky.social 2025, "Decameter-sized Earth impactors -- I: Orbital properties" - arxiv.org/abs/2501.03308
Surveying the largest Earth impacts of the past 30 years.
Reposted by Peter Brown
#PlanetaryScience in real time! The predicted fireball over Russia
Video of the 70cm #asteroid that entered earths atmosphere over northern Siberia today ☄️
December 3, 2024 at 5:11 PM
#PlanetaryScience in real time! The predicted fireball over Russia
Reposted by Peter Brown
Both techniques also agree about the composition of the object -- this little half meter asteroid was likely a regular run-of-the-mill ordinary chondrite, the most common kind of meteorite to land on the Earth today.
November 22, 2024 at 10:21 PM
Both techniques also agree about the composition of the object -- this little half meter asteroid was likely a regular run-of-the-mill ordinary chondrite, the most common kind of meteorite to land on the Earth today.
Reposted by Peter Brown
out today in the planetary science journal: "Telescope-to-Fireball Characterization of Earth Impactor 2022 WJ1" lead by yours truly. many thanks to my incredible coauthors, especially @meteordoc.bsky.social in the #2 spot, for making this study possible. iopscience.iop.org/article/10.3...
November 23, 2024 at 1:38 AM
Reposted by Peter Brown
Graham Hancock and the Comet Research Group are full of baloney.
Just apply Carl Sagan’s Baloney Detection Kit to the Younger Dryas impact hypothesis.
theconversation.com/as-the-tauri...
Just apply Carl Sagan’s Baloney Detection Kit to the Younger Dryas impact hypothesis.
theconversation.com/as-the-tauri...
As the Taurid meteor shower passes by Earth, pseudoscience rains down – and obscures a potential real threat from space
Get past the fake science, and the Taurid meteor shower foreshadows what could, one day, pose a troubling scenario.
theconversation.com
November 16, 2024 at 7:15 PM
Graham Hancock and the Comet Research Group are full of baloney.
Just apply Carl Sagan’s Baloney Detection Kit to the Younger Dryas impact hypothesis.
theconversation.com/as-the-tauri...
Just apply Carl Sagan’s Baloney Detection Kit to the Younger Dryas impact hypothesis.
theconversation.com/as-the-tauri...
Reposted by Peter Brown
My department is hiring for a teaching scholar faculty position: please share! www.uwo.ca/facultyrelat... 🔭🧪
www.uwo.ca
November 21, 2023 at 4:59 PM
My department is hiring for a teaching scholar faculty position: please share! www.uwo.ca/facultyrelat... 🔭🧪