SPHEREx: A Launch Odyssey Brings Cosmic Wonder to Pasadena

Pasadena's JPL and Caltech institutions guide groundbreaking mission to map the universe in 102 infrared wavelengths
Published on Jan 15, 2026

[photo credit: City of Pasadena]

When NASA’s SPHEREx space observatory finally lifted off from Vandenberg Space Force Base on March 11, after six grueling delays, it carried with it the hopes of thousands of scientists—and the expertise of Pasadena’s own research institutions. Now, nearly a year later, the groundbreaking mission to map the universe is capturing images that could reshape our understanding of how galaxies, stars, and life itself came to be. On January 31, residents will have a rare chance to hear directly from those guiding the science.

Roberta Paladini, a senior research scientist at Caltech’s Infrared Processing and Analysis Center (IPAC), will lead a free public presentation titled “SPHEREx: A Launch Odyssey.” NASA’s Jet Propulsion Laboratory leads the entire mission, while Caltech’s IPAC houses the SPHEREx Science Data Center that processes and distributes all scientific data.

SPHEREx sweeps across the entire celestial sphere, taking about 600 exposures each day. During its 25-month primary survey mission, it will map the entire sky four times, collecting data on 450 million galaxies and more than 100 million stars within the Milky Way. The mission tackles three profound questions: the origins of the universe, the collective glow of galaxies, and the location of water and life’s building blocks throughout the Milky Way.

SPHEREx: A Launch Odyssey will run on Saturday, January 31, 2026, at 11 a.m.–12:30 p.m. Linda Vista Branch Library, 1281 Bryant St., Pasadena. For more information, call (626) 744-7278 or visit https://www.cityofpasadena.net/library/?trumbaEmbed=view%3Devent%26eventid%3D194091846.