Caltech Astro
@caltechastro.bsky.social
Follow me to keep up to date on Caltech Astronomy Outreach events!
http://outreach.astro.caltech.edu
http://outreach.astro.caltech.edu
How do astronomical objects look in radio waves? How did one man revolutionize our understanding of the night sky in the 1930s? Dr. Allison Matthews recently gave a presentation on these topics and to discuss the legendary figure of Grote Reber:
www.youtube.com/watch?v=fMDe...
www.youtube.com/watch?v=fMDe...
January 30, 2026 at 11:50 PM
How do astronomical objects look in radio waves? How did one man revolutionize our understanding of the night sky in the 1930s? Dr. Allison Matthews recently gave a presentation on these topics and to discuss the legendary figure of Grote Reber:
www.youtube.com/watch?v=fMDe...
www.youtube.com/watch?v=fMDe...
How do scientists simulate the lives of galaxies, stars, planets, and black holes? Last week, we hosted the legendary Professor Phil Hopkins to discuss this very interesting topic for a Stargazing Lecture. His video is now up on our YouTube channel:
www.youtube.com/watch?v=wkU5...
www.youtube.com/watch?v=wkU5...
January 29, 2026 at 6:36 PM
How do scientists simulate the lives of galaxies, stars, planets, and black holes? Last week, we hosted the legendary Professor Phil Hopkins to discuss this very interesting topic for a Stargazing Lecture. His video is now up on our YouTube channel:
www.youtube.com/watch?v=wkU5...
www.youtube.com/watch?v=wkU5...
At next week's Death Valley Dark Sky Festival February 6-8, we will be hosting two Astronomy on Tap events. These evenings will each feature two 20-minute public science presentations by Caltech scientists, astro-themed trivia, and telescopes. Free!
outreach.astro.caltech.edu
outreach.astro.caltech.edu
January 28, 2026 at 10:07 PM
At next week's Death Valley Dark Sky Festival February 6-8, we will be hosting two Astronomy on Tap events. These evenings will each feature two 20-minute public science presentations by Caltech scientists, astro-themed trivia, and telescopes. Free!
outreach.astro.caltech.edu
outreach.astro.caltech.edu
What do we know about the atmospheres around distant worlds? What happened to NASA's budget and what is the future of funding for space? Join us Monday, February 9th at 7:30PM for our next Astronomy on Tap.
outreach.astro.caltech.edu/aot
outreach.astro.caltech.edu/aot
January 27, 2026 at 9:40 PM
What do we know about the atmospheres around distant worlds? What happened to NASA's budget and what is the future of funding for space? Join us Monday, February 9th at 7:30PM for our next Astronomy on Tap.
outreach.astro.caltech.edu/aot
outreach.astro.caltech.edu/aot
Join us in two weeks for the Death Valley Dark Sky Festival, a free weekend of stargazing, telescopes, science presentations, and more in one of the darkest skies in the USA! It's all happening February 6-8 in Death Valley National Park.
Full schedule: www.nps.gov/deva/planyou...
Full schedule: www.nps.gov/deva/planyou...
January 23, 2026 at 9:33 PM
Join us in two weeks for the Death Valley Dark Sky Festival, a free weekend of stargazing, telescopes, science presentations, and more in one of the darkest skies in the USA! It's all happening February 6-8 in Death Valley National Park.
Full schedule: www.nps.gov/deva/planyou...
Full schedule: www.nps.gov/deva/planyou...
Interested in learning about the supermassive black hole in our nearest neighboring galaxy? We hosted an Astronomy on Tap this week, featuring a talk by the scientist who detected this black hole. His presentation is now up on our YouTube channel:
www.youtube.com/watch?v=boDk...
www.youtube.com/watch?v=boDk...
January 16, 2026 at 10:33 PM
Interested in learning about the supermassive black hole in our nearest neighboring galaxy? We hosted an Astronomy on Tap this week, featuring a talk by the scientist who detected this black hole. His presentation is now up on our YouTube channel:
www.youtube.com/watch?v=boDk...
www.youtube.com/watch?v=boDk...
How do we simulate the formation and behavior of galaxies, black holes, and planets? How accurate are these simulations and what can they tell us about the real world? Our next Stargazing Lecture will cover this exciting topic:
January 15, 2026 at 8:19 PM
How do we simulate the formation and behavior of galaxies, black holes, and planets? How accurate are these simulations and what can they tell us about the real world? Our next Stargazing Lecture will cover this exciting topic:
Last month, we hosted an Astronomy on Tap devoted to plasma physics. We were joined by David Schaffner, physics professor from Bryn Mawr College to talk about the solar corona and the fourth state of matter, plasma. The talk is now up on our YouTube channel:
youtu.be/BEQyRPvEDhw
youtu.be/BEQyRPvEDhw
January 3, 2026 at 12:36 AM
Last month, we hosted an Astronomy on Tap devoted to plasma physics. We were joined by David Schaffner, physics professor from Bryn Mawr College to talk about the solar corona and the fourth state of matter, plasma. The talk is now up on our YouTube channel:
youtu.be/BEQyRPvEDhw
youtu.be/BEQyRPvEDhw
Here are some of the 2025 highlights of Caltech Astro's efforts to educate and engage with the broader society.
All told, we hosted 66 events with 23k live attendees in 2025, with many recorded to our YouTube channel: www.youtube.com/@CaltechAstro
We hope to see you in 2026!
All told, we hosted 66 events with 23k live attendees in 2025, with many recorded to our YouTube channel: www.youtube.com/@CaltechAstro
We hope to see you in 2026!
December 31, 2025 at 10:01 PM
Here are some of the 2025 highlights of Caltech Astro's efforts to educate and engage with the broader society.
All told, we hosted 66 events with 23k live attendees in 2025, with many recorded to our YouTube channel: www.youtube.com/@CaltechAstro
We hope to see you in 2026!
All told, we hosted 66 events with 23k live attendees in 2025, with many recorded to our YouTube channel: www.youtube.com/@CaltechAstro
We hope to see you in 2026!
How did the Solar System form and come to resemble what we see today? How did the Earth acquire its water? Professor Katherine de Kleer gave a Stargazing Lecture earlier this month on these topics. Check out her presentation on YouTube now:
www.youtube.com/watch?v=p6au...
www.youtube.com/watch?v=p6au...
December 29, 2025 at 10:16 PM
How did the Solar System form and come to resemble what we see today? How did the Earth acquire its water? Professor Katherine de Kleer gave a Stargazing Lecture earlier this month on these topics. Check out her presentation on YouTube now:
www.youtube.com/watch?v=p6au...
www.youtube.com/watch?v=p6au...
We recently discovered a supermassive black hole in the closest neighboring galaxy to ours--what is it like and how does it affect us? What does the sky look like in radio waves and what can we learn from it? Join us for Astronomy on Tap, Monday Jan 12!
outreach.astro.caltech.edu
outreach.astro.caltech.edu
December 22, 2025 at 10:34 PM
We recently discovered a supermassive black hole in the closest neighboring galaxy to ours--what is it like and how does it affect us? What does the sky look like in radio waves and what can we learn from it? Join us for Astronomy on Tap, Monday Jan 12!
outreach.astro.caltech.edu
outreach.astro.caltech.edu
Last month, we operated telescopes at the Watson Lecture, providing views of Saturn as attendees waited for the presentation by NASA JPL scientist Dr. Ashwin Vasavada on the habitability of Mars.
www.youtube.com/watch?v=ZuuL...
Photo Credits: Lance Hayashida & Cameron Hummels
www.youtube.com/watch?v=ZuuL...
Photo Credits: Lance Hayashida & Cameron Hummels
December 4, 2025 at 8:32 PM
Last month, we operated telescopes at the Watson Lecture, providing views of Saturn as attendees waited for the presentation by NASA JPL scientist Dr. Ashwin Vasavada on the habitability of Mars.
www.youtube.com/watch?v=ZuuL...
Photo Credits: Lance Hayashida & Cameron Hummels
www.youtube.com/watch?v=ZuuL...
Photo Credits: Lance Hayashida & Cameron Hummels
Want to learn about the universe? We have a YouTube channel with 200 public-level presentations on space-related topics. Topics include: black holes, galaxies, exoplanets, supernova, the history of the universe, and more. Check it out here:
www.youtube.com/@CaltechAstro
www.youtube.com/@CaltechAstro
November 27, 2025 at 12:41 AM
Want to learn about the universe? We have a YouTube channel with 200 public-level presentations on space-related topics. Topics include: black holes, galaxies, exoplanets, supernova, the history of the universe, and more. Check it out here:
www.youtube.com/@CaltechAstro
www.youtube.com/@CaltechAstro
We recently hosted Eva Kostadinova at Astronomy on Tap to discuss plasma, the main form of visible matter throughout our universe. Dr. Kostadinova is a professor at Auburn specializing in plasma physics, and her talk is now up on our YouTube channel:
www.youtube.com/watch?v=K_Ow...
www.youtube.com/watch?v=K_Ow...
November 25, 2025 at 6:09 PM
We recently hosted Eva Kostadinova at Astronomy on Tap to discuss plasma, the main form of visible matter throughout our universe. Dr. Kostadinova is a professor at Auburn specializing in plasma physics, and her talk is now up on our YouTube channel:
www.youtube.com/watch?v=K_Ow...
www.youtube.com/watch?v=K_Ow...
What do we know about our early solar system and how the planets formed? What can asteroids and meteorites reveal about our cosmic origins? Join us for our next Stargazing Lecture on Friday, December 5 @ 8PM.
outreach.astro.caltech.edu
outreach.astro.caltech.edu
November 24, 2025 at 7:05 PM
What do we know about our early solar system and how the planets formed? What can asteroids and meteorites reveal about our cosmic origins? Join us for our next Stargazing Lecture on Friday, December 5 @ 8PM.
outreach.astro.caltech.edu
outreach.astro.caltech.edu
Last weekend, we hosted the City of Astronomy Science Festival. We partnered with many other institutions across Pasadena to host science demos and presentations over the day. We had a blast interacting with the 1,000+ attendees who joined. Thanks to everyone who attended!
November 19, 2025 at 11:51 PM
Last weekend, we hosted the City of Astronomy Science Festival. We partnered with many other institutions across Pasadena to host science demos and presentations over the day. We had a blast interacting with the 1,000+ attendees who joined. Thanks to everyone who attended!
We partnered with Garfield High School in East LA last week to help with their Astronomy Night. Despite some clouds, we were still able to see Saturn and the Andromeda Galaxy, as well talk about the Moon and black holes with and enthusiastic bunch of students! Thanks for hosting!
November 18, 2025 at 7:53 PM
We partnered with Garfield High School in East LA last week to help with their Astronomy Night. Despite some clouds, we were still able to see Saturn and the Andromeda Galaxy, as well talk about the Moon and black holes with and enthusiastic bunch of students! Thanks for hosting!
A planet was recently detected orbiting the nearest star system to Earth, Alpha Centauri. Caltech Astro PhD student Aniket Sanghi, one of the lead scientists who made this discovery, recently gave a presentation at Astronomy on Tap, now on YouTube:
www.youtube.com/watch?v=oMcG...
www.youtube.com/watch?v=oMcG...
November 14, 2025 at 10:46 PM
A planet was recently detected orbiting the nearest star system to Earth, Alpha Centauri. Caltech Astro PhD student Aniket Sanghi, one of the lead scientists who made this discovery, recently gave a presentation at Astronomy on Tap, now on YouTube:
www.youtube.com/watch?v=oMcG...
www.youtube.com/watch?v=oMcG...
What will we discover with the world's most powerful radio telescope? Last week, Professor Gregg Hallinan taught us all about the DSA, a new telescope being built in remote Nevada and what it will mean for the future of astronomy! Now on YouTube:
www.youtube.com/watch?v=7cnN...
www.youtube.com/watch?v=7cnN...
November 10, 2025 at 8:38 PM
What will we discover with the world's most powerful radio telescope? Last week, Professor Gregg Hallinan taught us all about the DSA, a new telescope being built in remote Nevada and what it will mean for the future of astronomy! Now on YouTube:
www.youtube.com/watch?v=7cnN...
www.youtube.com/watch?v=7cnN...
Join us to learn why Pasadena is the "City of Astronomy" for a free afternoon of science demonstrations, solar telescopes, and public-level presentations on black holes, exoplanets, galaxies, space weather, and AI!
Sunday, November 16 Noon-4PM
www.cityofastronomy.org
Sunday, November 16 Noon-4PM
www.cityofastronomy.org
November 7, 2025 at 6:49 PM
Join us to learn why Pasadena is the "City of Astronomy" for a free afternoon of science demonstrations, solar telescopes, and public-level presentations on black holes, exoplanets, galaxies, space weather, and AI!
Sunday, November 16 Noon-4PM
www.cityofastronomy.org
Sunday, November 16 Noon-4PM
www.cityofastronomy.org
How can we build a star here on Earth? How does the fourth state of matter, plasma, behave? This week, we are hosting two Astronomy on Tap events all about plasma physics: Monday, November 17th and Thursday, November 20th at 7:30PM
outreach.astro.caltech.edu
outreach.astro.caltech.edu
November 4, 2025 at 6:16 PM
How can we build a star here on Earth? How does the fourth state of matter, plasma, behave? This week, we are hosting two Astronomy on Tap events all about plasma physics: Monday, November 17th and Thursday, November 20th at 7:30PM
outreach.astro.caltech.edu
outreach.astro.caltech.edu
Rockstars Jason Achilles and Forrest Mitchell came out to our Astronomy on Tap this week in costume as Han Solo and Chewbacca. Many thanks to these legends for performing at so many of our events throughout the year! Happy Halloween, everyone!
October 31, 2025 at 8:46 PM
Rockstars Jason Achilles and Forrest Mitchell came out to our Astronomy on Tap this week in costume as Han Solo and Chewbacca. Many thanks to these legends for performing at so many of our events throughout the year! Happy Halloween, everyone!
How are scientists working to find worlds possibly hosting life, like Pandora from the movie Avatar? Caltech scientist Katelyn Horstman explains these efforts and more at our recent Astronomy on Tap! Her presentation is now up on our YouTube channel:
www.youtube.com/watch?v=K-X-...
www.youtube.com/watch?v=K-X-...
October 31, 2025 at 7:51 PM
How are scientists working to find worlds possibly hosting life, like Pandora from the movie Avatar? Caltech scientist Katelyn Horstman explains these efforts and more at our recent Astronomy on Tap! Her presentation is now up on our YouTube channel:
www.youtube.com/watch?v=K-X-...
www.youtube.com/watch?v=K-X-...
Last weekend, we joined the California Dark Sky Festival near Death Valley NP. We helped operate telescopes, did science demonstrations, hosted an Astrophysicist Q&A Panel, and gave lectures on "Black Holes", "Space Exploration", and "The Formation of the Solar System".
October 23, 2025 at 10:07 PM
Last weekend, we joined the California Dark Sky Festival near Death Valley NP. We helped operate telescopes, did science demonstrations, hosted an Astrophysicist Q&A Panel, and gave lectures on "Black Holes", "Space Exploration", and "The Formation of the Solar System".
Images of Comet C/2025 A6 (Lemmon) shot from Panamint Valley over the weekend at the California Dark Sky Festival by Caltech Astro PhD student Advait Mehla.
October 21, 2025 at 5:00 PM
Images of Comet C/2025 A6 (Lemmon) shot from Panamint Valley over the weekend at the California Dark Sky Festival by Caltech Astro PhD student Advait Mehla.