This image contains information about the 2027 IPAC Visiting Graduate Student Research Fellowship (VGSRF) program. The Call for Applications is now open for graduate students who hold U.S. citizenship, national, or permanent resident status by the application deadline, which is Mrach 31, 2026. Applicants may be currently enrolled at US or non-US institutions. Learn more about the program at https://www.ipac.caltech.edu/page/graduate-fellowship-2027.
IPAC's Visiting Graduate Student Research Fellowship (#VGSRF) is accepting applications!
✨Gain research experience and mentoring from IPAC scientists
✨Access large science datasets🔭
✨Receive a monthly stipend
Browse the projects and apply by 3/31: www.ipac.caltech.edu/page/graduate-fellowship-2027
03.03.2026 19:24
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This is an image of Caltech astrophysicist Carl Grillmair.
Visual description: The image focuses on Carl's head and shoulders; he is wearing a white shirt with gray stripes with short sleeves, and he is looking directly at the camera and smiling. Carl has a busy brownish-red bear and hair and with gray eyes.
Our IPAC community is in shock at the sudden loss of our colleague and friend, Carl Grillmair.
His curiosity and dedication shaped IPAC in countless ways. We've dedicated our science talk series, The Next Seven Minutes, to his memory.🔭 www.ipac.caltech.edu/news/ipac-mourns-passing-of-carl-grillmair
23.02.2026 22:21
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This image is a composite of artist's illustrations of NASA's Nancy Grace Roman Space Telescope pointing towards a lengthy collection of exoplanets against a background image of the Galactic Plane. The text says "2026 Sagan Summer Workshop" and the theme "Exoplanets with Roman Surveys: Microlensing and Transits July 20-24, 2026, Pasadena, California" followed by the hashtag #sagan2026.
⏰Time to Register for #sagan2026⏰
The hybrid workshop focuses on expected #exoplanet science from the @nasaromantelescope.bsky.social Galactic Bulge Time Domain Survey. Travel support requests for early-career participants are due 3/5. nexsci.caltech.edu/workshop/2026
🔭 #astrocode #instrumentation
06.02.2026 23:22
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Today we are simply known as IPAC, with over 150 staff members from researchers to developers to engineers and more, spanning the full spectrum of astronomy and planetary science.
Join us this year as we celebrate our 40th anniversary! #IPAC40 🔭
04.02.2026 07:35
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We began in the 1980's as a small group of scientists called the "Infrared Processing & Analysis Center" supporting the Infrared Astronomical Satellite (IRAS) mission, but now we have grown beyond our old acronym and have offices in two buildings on the Caltech campus.
#IPAC40 🔭
04.02.2026 07:35
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#OTD 40 years ago, IPACers moved to @caltech.edu campus!
This memo details the move to IPAC (the Morrisroe building) the week of February 3rd, 1986. Before moving, IPACers worked in an office building on Lake Avenue, a few blocks from Caltech.
#IPAC40 🔭
04.02.2026 07:35
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Catch the IPAC Director @tom-greene.bsky.social at Astronomy on Tap Feb. 9, 2026 @ 7:30pm!
The event is free and open to the public 🔭 🧪 ⚛️ #SciComm
30.01.2026 00:01
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This graphic contains two images. On the left is an illustration of the SPHEREx space telescope with an infrared view of space in the background. On the right is an all-sky mosaic image as an elliptical projection based on spectral data collected by the telescope between May and December 2025.
Big applause for the SPHEREx mission team for receiving the Explorers Club's 2026 Sylvia A. Earle Award for Exploration Excellence!👏👏👏
The award recognizes the mission's accomplishment of completing the first infrared map of the sky in 102 colors.
🌈🔭🏆 www.explorers.org/ecad-2026-awardees
29.01.2026 23:24
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ZTF image of M31
The twenty-fourth public data release from the Zwicky Transient Facility contains approximately 69.7 million images, 1043 billion source detections extracted from these images, and 5.32 billion light curves. irsa.ipac.caltech.edu/Missions/ztf...
22.01.2026 21:11
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We are especially excited to welcome you all back this summer for #AAS248 🔭 in our hometown of Pasadena, CA. We will be celebrating IPAC’s 40th anniversary!
Follow us on social media and keep an eye out for special programming we're hosting during the meeting! See you all soon ☀️
21.01.2026 02:21
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Another #AAS247 🔭 in the books = another wonderful, whirlwind of exciting astronomy happening and coming soon! 💨
From topics like Roman, Euclid, and SPHEREx, to NExScI, NED, IRSA, NITARP, Firefly, PRIMA, and SHERA — there was something for everyone. Thank you to all!
21.01.2026 02:21
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🔭 ⚛️ 🧪 👩🔬
20.01.2026 21:38
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🔭 ⚛️ 🧪
20.01.2026 21:37
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IPAC scientist Vivian U presented on wobbly black holes at her #AAS247 press conference! This work offers new insights into how galaxies evolve, and it was published in @science.org on Jan. 8, 2026
Read more here:
www.ipac.caltech.edu/news/astrono...
20.01.2026 20:21
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Christiansen is the PI of the project, and the data will be archived at IPAC in the NASA Exoplanet Archive!
16.01.2026 02:01
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IPACer @aussiastronomer.bsky.social & team shared the SHERA Mission Concept at #AAS247 🦸♀️ 🔭
Searching for Habitable Exoplanets with Relative Astrometry (SHERA) will look for rocky planets in the habitable zones of Sun-like stars for the 1st time & potentially discover the nearest Earth-like planets!
16.01.2026 02:00
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This is a group photo of the participants of the first Michelson Interferometry Summer School held on the Caltech campus in 1999. The group photo shows ~58 people standing in the shade in front of a campus building, smiling and looking at the camera that is taking the picture. The group is outside and flanked by small trees and other green landscaping. Image credit: Caltech/IPAC-NExScI
We're thrilled to welcome @caltech.edu President-Elect Ray Jayawardhana!
As a grad student, Jayawardhana (a.k.a RayJay) attended the first Michelson Interferometry Summer School in 1999. Today, it lives on as NExScI's Sagan Summer Workshop—and both the workshop and RayJay are still going strong.🔭🚀
15.01.2026 22:23
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Go Pandora! 🛰️ 🔭
Like Jessie said, all of the mission data will be archived at NExScI, the NASA Exoplanet Science Institute at Caltech IPAC!
14.01.2026 22:57
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Deadline Reminder: Abstracts are due tomorrow, Jan. 14!
RAPID Response: Hot-wiring the Next Generation of Time-Domain Science is only ~2 months away. We can't wait to discuss and hear about exciting time-domain science with you! conference.ipac.caltech.edu/rapid-hotwiring2026/ 🔭
13.01.2026 20:22
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Educators + students present at #AAS247!
NITARP continues its 20-year program of pairing educators with astronomers for year-long, authentic research projects using NASA data. They presented their results to fellow researchers at IPAC's booth.🚀🔭📊
www.ipac.caltech.edu/news/teachin...
07.01.2026 23:36
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More Astrophysics for More People ✨
Join us for a virtual #AAS247 session and a first look at The Schmidt Observatory System—a new network of ground and space-based initiatives designed to break the traditional limits of discovery.
📆 Jan 7 | 3-5:30pm MT / 5-7:30pm ET
Register here: buff.ly/kbbNFuB
05.01.2026 20:10
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Meet Roman experts to learn more about the mission, learn about the Cycle 1 Call for Proposals (due March 17), and get some stickers! 👾
Come visit the NASA, STScI, and IPAC booths in Phoenix Convention Exhibit Hall throughout the week.
#AAS247 #ExpandOurView #NASARoman
05.01.2026 16:03
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Are you at #AAS247 & interested in submitting a Roman proposal? 🔭
Come to the "Roman Space Telescope Proposal and Science Planning" splinter session Tuesday Jan. 6 at 10:0am - 12:00pm MT.
Find the call for proposals here: roman-docs.ipac.caltech.edu/roman-propos...
@nancyromansci.bsky.social
06.01.2026 15:55
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⭐️ ⛄️ Happy Holidays from IPAC! ❄️ 🪐
While we get excited to celebrate 40 years of IPAC at Caltech in 2026, we're looking back at some of the highlights of 2025.
Check them out here: www.ipac.caltech.edu/holiday-card 🔭
24.12.2025 20:12
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The SPHEREx Science Data Center is based at IPAC and reduces the data for scientists with @irsaipac.bsky.social
IRSA will release many science products, including:
- All-sky galaxy redshift catalog
- Broad-band mosaic maps of deep fields
- Catalog of interstellar ices absorption features
🧪 ⚛️ 🔭
23.12.2025 21:45
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