CityofAstronomy

We are scientific institutions partnered to celebrate Pasadena, California as the City of Astronomy. Join us June 14 for AstroFest 2026!

[Caltech Astro Outreach @CaltechAstro]

Join us for a FREE afternoon of science demonstrations, solar telescopes, and public-level presentations on black holes, exoplanets, galaxies, and more. Come learn about space with scientists from Caltech, NASA JPL, Carnegie, LIGO, etc. More info at:
https://t.co/KfA6JKIYTw

[Carnegie Astronomy @CarnegieAstro]

We are so excited to kick off a week of astronomy events this Saturday. Join us! There will be tons of hands-on astro activities for the whole family!

[Giant Magellan Telescope @giantmagellan]

Join us this Saturday afternoon for Pasadena’s AstroFest 2022! This community event will have family-friendly activities, interactive VR demos, gravity-wells, self-guided solar system tours, solar telescopes, and more. https://t.co/zLDNgNSKmI

[CityofAstronomy @CityofAstronomy]

The event will be entirely outdoors, on the western portion of the plaza in front of the Pasadena Civic Auditorium.

[CityofAstronomy @CityofAstronomy]

AstroFest 2022 kicks off a week of FREE family-friendly, space-themed fun on Saturday, June 11! Join us 2-8 pm for hands-on activities, creative displays, interactive VR demos, solar telescopes, and more at the Pasadena Convention Center. https://t.co/UPPupR9qbw

[Caltech Astro Outreach @CaltechAstro]

Join us next week for 2 IN-PERSON Astro on Tap events in Pasadena featuring an all-star lineup of speakers! Each night: 2x20 min public-level science talks, telescopes, pub trivia, and live music. Free and open to all at Dog Haus Biergarten!

[Pasadena Literary Alliance @PasadenaLit]

💫 Did you know that Pasadena is the City of Astronomy? Join us for a stellar conversation between Emily Levesque (@emsque) and John Mulchaey (@johnmulchaey) Don't miss this special opportunity! Purchase tickets at https://t.co/Aj2DGLyxXU
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[CityofAstronomy @CityofAstronomy]

Emily Levesque, an astronomer at @UW, will discuss "The Last Stargazers: The Enduring Story of Astronomy's Vanishing Explorers" at @vromans at 7 pm this Friday, Jan. 14.
https://t.co/bEalwoeTV8

[W. M. Keck Observatory @keckobservatory]

EVENT: Donʻt forget! Join us Wed. @ 5PM HST to learn about the mysterious Planet 9 w/ Dr. Mike Brown (Guy Who Killed Pluto) of @Caltech Center for Comparative Planetary Evolution. Find out why astronomers think it exists & what they are doing to find it. We hope to see you there!

[NASA JPL @NASAJPL]

Happy Birthday to us! 🥳 #OTD 85 years ago, a @Caltech rocketry group fired the first tests of an alcohol-fueled rocket motor in the riverbed wilderness area where JPL stands today. Time flies when you dare mighty things!

More on our origin: https://t.co/ieFTyezR1B

[Caltech Archives and Special Collections @CaltechArchives]

For #ArchivesArt, we present Russell Porter’s stunning drawings of @Caltech’s Palomar Mountain 200-inch telescope. See https://t.co/dN8oI25dAT for more about him. His drawings will be featured in our contribution to @PSTinLA in 2024: https://t.co/GvrbPxHEnh #ArchivesHashtagParty

[All Space Considered at Griffith Observatory @AllSpaceCnsdrd]

After last Wednesday’s autumnal equinox sunset presentation, Telescope Demonstrator Anthony Perkic (@DesertCoyote22) caught this gorgeous shot of the dome of the Samuel Oschin Planetarium and the lights of Los Angeles. Right above the dome are bright planets #Jupiter and #Saturn.

[Mount Wilson Observatory @MtWilsonObs]

Today we present Chapter 16 of our ‘Discovering Mount Wilson’ series with a look at the ‘Hale-Nicholson Law,’ named after our founder George Ellery Hale and fellow astronomer Seth Nicholson.

Paste this link in your bio to read our short overview: https://t.co/DFPsY77HkB

[Bethany Ehlmann @bethanyehlmann]

Calling @PCCLancer students and @Caltech ugrads who want to work on a space mission: @LunarTrailblazr is hiring! Open call for 5-10hr/week interns for mission art, mission communications, ops systems coding/scripting/database roles, and GIS. Due 11 Oct:
https://t.co/7QwqgL9zj2

[All Space Considered at Griffith Observatory @AllSpaceCnsdrd]

Tomorrow morning at 5:53 a.m. PDT from Los Angeles, look to the northwest to observe the International @Space_Station (#ISS) soar across the sky. It will reach its highest point at 5:57 a.m. at 67 degrees above the northeast horizon and set in the southeast at 6:00 a.m.

[Caltech @Caltech]

Congratulations are in order! Professors Mansi Kasliwal and Gregg Hallinan, together with collaborators Alessandra Corsi and Raffaella Margutti, have been honored with a @brkthroughprize New Horizons Prize in Physics.

https://t.co/KsRr5OrnWi

[Pasadena Pub Library @pasadenalibrary]

Join us online for fun lab activities using household supplies as we explore the different branches of science.

Presented by Mighty Chondria. For ages 9-12.

Mondays, 9/13 & 9/27 4pm via Zoom. For more info and registration, visit: https://t.co/Jx1YHp07yi

[CityofAstronomy @CityofAstronomy]

Don't miss the Family STEAM Open House on Oct. 16 featuring @NASAJPL engineer Janelle Wellons!

[Innovate Pasadena @InnovatPasadena]

It's this time of the year... #ConnectWeek2021 is coming to you from October 10 to October 17. We're still adding events but check out what's coming: https://t.co/A0XhmwKwef #Connect2021 #ConnectWeek

[Mount Wilson Observatory @MtWilsonObs]

We regret to inform you that Mount Wilson Observatory will be closed in compliance with @u.s.forestservice @angelesnatl officials order. All scheduled events are affected through 9/17. Watch for updates on our website and social platforms. Thanks to the #firefighters #staysafe

[Carnegie Science @carnegiescience]

Astronomer @anabonaca, for whom the Milky Way galaxy is laboratory to explore the evolution of the universe, has joined @CarnegieAstro as a Staff Scientist.https://t.co/Lse3B2AeRg