Sign in

Caltech Astro

@caltechastro.bsky.social
282 followers 10 following 273 posts

Follow me to keep up to date on Caltech Astronomy Outreach events! outreach.astro.caltech.edu

PostsRepliesMedia
Caltech Astro @caltechastro.bsky.social · 29/09/2026
Dark skies, the Milky Way, and thousands of people exploring the Universe. We had a great weekend at the Great Basin Astronomy Festival, sharing telescopes, science talks, and astronomy with visitors from across the country. Thanks to Great Basin National Park for hosting.
011
Caltech Astro @caltechastro.bsky.social · 28/09/2026
What can light echoes tell us about black holes? How do astronomers connect simulated galaxies with the real Universe? Join us tonight at 7:30PM for Astronomy on Tap: two short science talks, pub trivia, and guided stargazing. Free and open to all!
000
Caltech Astro @caltechastro.bsky.social · 27/09/2026
Caltech's Owens Valley Radio Observatory is hosting a series of free public astronomy lectures in Bishop this fall. Hear about black holes, cosmic rays, solar explosions, and radio bursts. Talks will be at Cerro Coso Community College in Bishop and are free and open to all.
011
Caltech Astro @caltechastro.bsky.social · 25/09/2026
How have ground-based telescopes transformed our view of the Universe? We recently hosted Kaitlyn Shin to discuss the history and science of ground-based telescopes at Astronomy on Tap. Kaitlyn's presentation is now up on YouTube: www.youtube.com/watch?v=9HAs...
000
Caltech Astro @caltechastro.bsky.social · 24/09/2026
Our scientists helped out with the Sequoia Dark Sky Festival this month. We brought telescopes (including a radio telescope), hosted an Astrophysicist Q&A Panel, and gave science presentations on cosmology and asteroids. Great trees, great skies, and great crowds!
000
Caltech Astro @caltechastro.bsky.social · 23/09/2026
Exciting news for astronomy in Pasadena! NASA has selected PRIMA, the PRobe far-Infrared Mission for Astrophysics, to move forward in development. Congratulations to the entire PRIMA team, including our colleagues at NASA JPL and IPAC here in Pasadena! www.nasa.gov/news-release...
022
Caltech Astro @caltechastro.bsky.social · 22/09/2026
What can we learn about black holes from their surroundings? How do galaxies change over billions of years? Join us next week to learn about these topics and more at Astronomy on Tap, featuring telescopes, trivia, science, and drinks!
000
Caltech Astro @caltechastro.bsky.social · 21/09/2026
What secrets are hidden beneath the clouds of Venus? What can our Venus teach us about the evolution of Earth-like worlds? Last week, NASA scientist Amy Hofmann joined us to discuss DAVINCI, an upcoming NASA mission to visit Venus. Now up on YouTube: www.youtube.com/watch?v=1alg...
000
Caltech Astro @caltechastro.bsky.social · 18/09/2026
Happening tonight! Join us to learn about Venus and look through a telescope. In-person and live-streamed on YouTube: outreach.astro.caltech.edu
000
Caltech Astro @caltechastro.bsky.social · 16/09/2026
Join us this Friday to learn all about Venus and DAVINCI, NASA’s upcoming mission to explore our mysterious planetary neighbor!
000
Caltech Astro @caltechastro.bsky.social · 15/09/2026
How can we use echoes of light to map the regions around supermassive black holes? How do astronomers connect computer simulations of galaxies with what we actually see in the Universe? Join us Monday, September 28th at 7:30PM for Astronomy on Tap! outreach.astro.caltech.edu/aot
000
Caltech Astro @caltechastro.bsky.social · 11/09/2026
What makes a solar eruption extreme? Why are some eruptions from the Sun far more powerful than others? We recently hosted solar physicist Gabriel Muro to discuss the physics behind solar eruptions at Astronomy on Tap. Now up on YouTube: www.youtube.com/watch?v=gYNd...
010
Caltech Astro @caltechastro.bsky.social · 10/09/2026
Join us this weekend for the Sequoia Dark Sky Festival, featuring science talks, telescope viewing, and more! Our team will give presentations on asteroids, supernovae, and cosmology. We'll also have telescopes, including a radio telescope to detect hydrogen gas in the Milky Way!
021
Caltech Astro @caltechastro.bsky.social · 08/09/2026
Last month, we teamed up with Lassen Volcanic National Park for Dark Skies at Lassen, a weekend of stargazing and science! We had great weather, beautiful views, and lots of astronomy throughout the weekend. Join us at Sequoia or Great Basin this weekend for similar events!
010
Caltech Astro @caltechastro.bsky.social · 07/09/2026
We'll be in Nevada this weekend for the Great Basin Astronomy Festival, featuring science presentations, astrophotography, and telescopes in some of the darkest skies in the USA. Join us for astronomy as well as mountains, trails, and the oldest living trees in the world!
000
Caltech Astro @caltechastro.bsky.social · 05/09/2026
What happens when a star ventures too close to a supermassive black hole? How can a black hole's gravity literally tear a star apart? We recently hosted researcher Xiaoshan Huang to discuss these phenomena at a recent Astronomy on Tap. Now on Youtube: www.youtube.com/watch?v=eMru...
000
Caltech Astro @caltechastro.bsky.social · 03/09/2026
Did Venus once have oceans? Why did Earth's nearest planetary neighbor become such a hellish world? Join us for a lecture by NASA JPL scientist Dr. Amy Hofmann on Sept 18 @ 8PM. Talk followed by stargazing with telescopes. In-person and on YouTube. Free! outreach.astro.caltech.edu
010
Caltech Astro @caltechastro.bsky.social · 02/09/2026
Come look through a telescope under some of the darkest skies in the USA! Join us next week at Great Basin National Park in eastern Nevada for the Great Basin Astronomy Festival, September 10–12. Free and open to all. www.nps.gov/grba/planyou...
000
Caltech Astro @caltechastro.bsky.social · 31/08/2026
Join us tonight to learn all about telescopes, past, present, and future, including the Roman Telescope launched yesterday! Telescopes will be set up for people to view the sky, and there will be a telescope as a prize at our astronomy-themed pub trivia! See you at 7:30PM!
000
Caltech Astro @caltechastro.bsky.social · 28/08/2026
What causes gamma-ray bursts, the most powerful explosions in the Universe? We recently hosted Caltech PhD student Delina Levine to give a presentation at Astronomy on Tap all about gamma-ray bursts. Her presentation is now up on YouTube: www.youtube.com/watch?v=5rdn...
000
Caltech Astro @caltechastro.bsky.social · 27/08/2026
There will be a partial lunar eclipse tonight! You'll be able to watch the shadow of the Earth pass across the Moon, partially blocking its illumination from the Sun. For west coasters, the eclipse takes place between 7:32 PM and 10:52 PM. svs.gsfc.nasa.gov/5672/
svs.gsfc.nasa.gov
NASA Scientific Visualization Studio | August 27-28, 2026 Deep Partial Lunar Eclipse
On August 28, 2026 (the evening of the 27th in some time zones), the Moon passes into the shadow of Earth, creating a deep partial lunar eclipse. At the moment of greatest eclipse, 4:13 a.m. Univeral Time, 96.3% of the Moon's disk will be within Earth's umbra. The Americas are centrally located for observing this eclipse.
034
Caltech Astro @caltechastro.bsky.social · 26/08/2026
Do you like nature and astronomy? Join us in 2 weeks for the Sequoia Dark Sky Festival, September 11–13! We'll be joining the National Park Service for a weekend of stargazing, science presentations, and more. sequoiaparksconservancy.org/dark-sky-fes...
010
Caltech Astro @caltechastro.bsky.social · 25/08/2026
Telescopes are astronomers' primary tools for exploring the Universe. But how do they work, and what might the next generation of telescopes look like? Join us at Astronomy on Tap next week to learn about new telescope designs that could transform how we study the cosmos!
010
Caltech Astro @caltechastro.bsky.social · 24/08/2026
Do electrons really spin? Last week, Professor Chip Sebens joined us to explore this deceptively simple question and took us on a journey through electromagnetism, quantum mechanics, and the philosophy of physics. His presentation is now up on YouTube: www.youtube.com/watch?v=J-mN...
011
Caltech Astro @caltechastro.bsky.social · 21/08/2026
Happening tonight! Join us for guided stargazing with telescopes and discussions of how quantum mechanics views the world around us!
120
Caltech Astro @caltechastro.bsky.social · 18/08/2026
Join us this Friday night to learn about quantum mechanics and what actually is going on inside the atom. Bring your philosophy questions for our panel of philosophers of physics!
010
Caltech Astro @caltechastro.bsky.social · 15/08/2026
How did astronomers discover that our Milky Way is just one of countless galaxies in the Universe? What role did the 100-inch telescope at Mount Wilson play in this story? We hosted Dr. Jeff Rich from Carnegie Observatories to discuss these topics: youtu.be/BZNGzm6SvvE
010
Caltech Astro @caltechastro.bsky.social · 14/08/2026
How do astronomers observe a universe filled with light our eyes can't see? Why are some telescopes built on mountains while others are launched into space? Join us Monday, August 31st for our next Astronomy on Tap. outreach.astro.caltech.edu
000
Caltech Astro @caltechastro.bsky.social · 10/08/2026
What exactly is an electron--is it a tiny particle, a wave, or something else entirely? What does quantum mechanics really tell us about the nature of an electron? Join us for our next Stargazing Lecture on August 21st. outreach.astro.caltech.edu
021
Caltech Astro @caltechastro.bsky.social · 07/08/2026
Happening this weekend. See you in Lassen!
000
Caltech Astro @caltechastro.bsky.social · 06/08/2026
Want to learn about the Moon from someone who has been there? We hosted Apollo 17 astronaut Harrison Schmitt this week for a presentation on geology. Dr. Schmitt is a Caltech alum ('57) and one of the four surviving people who have walked on the Moon. www.youtube.com/watch?v=yA7W...
000
Caltech Astro @caltechastro.bsky.social · 04/08/2026
Want to hear from someone who walked on the Moon? Harrison Schmitt, one of the four surviving astronauts to have walked on the Moon, will be giving a talk about his experiences today at 2PM. Live-streamed on YouTube.
010
Caltech Astro @caltechastro.bsky.social · 03/08/2026
Happening Tonight @ 7:30PM. Join us for a beer and black holes!
000
Caltech Astro @caltechastro.bsky.social · 31/07/2026
How can black holes serve as cosmic fossils, revealing the lives of the massive stars that created them billions of years ago? Floor Broekgaarden, astrophysicist at UC San Diego discussed this topic at Astronomy on Tap! Her presentation is on YouTube: www.youtube.com/watch?v=yzn5...
010
Caltech Astro @caltechastro.bsky.social · 30/07/2026
Caltech will be hosting astronaut and statesman Harrison Schmitt on Tuesday, August 4 @ 2PM. Dr. Schmitt served as the Lunar Module Pilot on Apollo 17 and is one of the four surviving people to have walked on the Moon. For more information, see: outreach.astro.caltech.edu
000
Caltech Astro @caltechastro.bsky.social · 29/07/2026
What can an x-ray view of the sky tell us about dark energy and how the universe evolved over billions of years? Last month we hosted Esra Bulbul, the lead cosmologist working on the eROSITA x-ray mission, to discuss the mission and relevant science at our Astronomy on Tap event.
010
Caltech Astro @caltechastro.bsky.social · 28/07/2026
Join us next Monday to hear all about black holes tearing apart stars and extreme solar eruptions at our next Astronomy on Tap!
000
Caltech Astro @caltechastro.bsky.social · 28/07/2026
NASA's Roman Space Telescope launches in a month. Last week, NASA scientist Lee Armus joined us to talk about the mission and its science goals, from exoplanet direct imaging to studying the nature of dark matter and dark energy! His presentation is now up on YouTube: www.youtube.com/watch?v=gGVa...
000
Caltech Astro @caltechastro.bsky.social · 24/07/2026
Join us tonight to learn all about the new NASA Roman Space Telescope and all of the cool science it will do: cosmology, exoplanets, galaxies, and more! It's launching in a month! Telescopes after the presentation. In-person and live-streamed on YouTube.
010
Caltech Astro @caltechastro.bsky.social · 24/07/2026
Do you like national parks and astronomy? Join us in two weeks at Lassen National Park for a weekend of astronomy. There will be guided stargazing with telescopes, constellation tours, and presentations from NASA+Caltech scientists! www.nps.gov/lavo/planyou...
000
Caltech Astro @caltechastro.bsky.social · 23/07/2026
How do black holes literally tear apart stars? What causes the Sun to erupt and send material into space? Join us Monday, August 3rd at 7:30PM at our next Astronomy on Tap. Science, telescopes, pub trivia--all for free! outreach.astro.caltech.edu/aot
020
Caltech Astro @caltechastro.bsky.social · 22/07/2026
There is an article in the Caltech Magazine about our recent City of Astronomy Science Festival. Hopefully we will do this again. caltechmagazine.squarespace.com/post/pasaden...
caltechmagazine.squarespace.com
The Cosmos in the Convention Center: Caltech Stars in Pasadena’s City of Astronomy Festival — Caltech Magazine
Families and astronomy buffs enjoyed interacting with scientists from a stunning array of astronomy and space organizations in and near Pasadena, including from Caltech’s campus, JPL, and IPAC. By ...
010
Caltech Astro @caltechastro.bsky.social · 20/07/2026
What goes on inside of a star cluster? What happens to black holes that form there? We recently hosted Professor Kyle Kremer to describe the extreme conditions in these dense environments and their consequences. Now up on YouTube: www.youtube.com/watch?v=sYAB...
001
Caltech Astro @caltechastro.bsky.social · 17/07/2026
Join us in a week for our next Stargazing Lecture, introducing the NASA Roman Space Telescope, which will launch into space in 6 weeks and transform our understanding of the cosmos!
020
Caltech Astro @caltechastro.bsky.social · 16/07/2026
We helped host the City of Astronomy Science Festival last month, featuring lots of science activities over a Sunday afternoon. It was magical with over 2000 attendees, including Mayor Gordo and Congresswoman Chu. For more information, see: www.cityofastronomy.org/about
000
Caltech Astro @caltechastro.bsky.social · 13/07/2026
Happening tonight!
001
Caltech Astro @caltechastro.bsky.social · 10/07/2026
Is there significant evidence for extraterrestrial life? What do scientists think about aliens? We recently hosted Dr. Tom Rice, Professor of Physics at George Washington University as he discussed this exciting topic. Now up on our YouTube channel: youtu.be/jt7ObvfM0xI
000
Caltech Astro @caltechastro.bsky.social · 08/07/2026
NASA is launching its next great observatory, the Roman Space Telescope in September 2026. What will it do? What new discoveries is it expected to make? Join us for our next Stargazing Lecture from Senior Research Scientist Dr. Lee Armus to learn more! outreach.astro.caltech.edu
072
Caltech Astro @caltechastro.bsky.social · 06/07/2026
How were galaxies discovered right here in Los Angeles at the Mt. Wilson Observatory? What causes gamma-ray bursts, the most powerful explosions in the universe? Join us Monday, July 13th at 7:30PM at our next Astronomy on Tap. outreach.astro.caltech.edu/aot
021
Caltech Astro @caltechastro.bsky.social · 02/07/2026
How can we find the darkest skies in the USA, and what can we do to preserve them? Stephen Hummel, Director of Dark Sky Preservation at McDonald Observatory gave our 150th Astronomy on Tap event last month on this important topic. Now on our YouTube: www.youtube.com/watch?v=HiKw...
020