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Southern Californians willing to stay up late or rise before dawn will have an opportunity to view the annual Perseid meteor shower Wednesday night and early Thursday under what astronomers say should be ideal viewing conditions. The Perseids are expected to p... More »
The Perseid meteor shower reaches its peak over Pasadena on the night of Wednesday, Aug. 12, into the predawn hours of Thursday, Aug. 13, arriving in a year when almost no moonlight will interfere with the view. The peak falls at nearly the same moment as the ... More »
Engineers at NASA’s Jet Propulsion Laboratory in Pasadena have completed a major round of testing on an unusually lightweight, fabric-based radar antenna designed to help three future Mars helicopters search for shallow deposits of frozen water beneath the pla... More »
NASA’s Perseverance rover, built and operated by the Jet Propulsion Laboratory, which Pasadena-based Caltech manages for NASA, has recorded the first observation from the surface of another planet of Earth disappearing behind another celestial object, NASA sai... More »
For more than 100 years, Caltech’s Earnest C. Watson Lecture Series has brought the wonder and excitement of groundbreaking research to the public through free live events designed to spark conversation and connection. The 2025–26 season drew thousands of gues... More »
Three of the 18 early-stage aerospace concepts selected for new NASA funding are being led by researchers at NASA’s Jet Propulsion Laboratory in Pasadena, according to an announcement published by the laboratory on July 29. The awards come from the NASA Innova... More »
In 1989, the Voyager 2 mission discovered six new moons orbiting Neptune, including five tiny ones that orbit just outside the planet’s main rings. Because of their small sizes and locations, these satellites have been difficult to study from Earth. Now, using... More »
Caltech chemistry professor Hosea Nelson (PhD ’13) has his eyes on a big goal: He wants to know the three-dimensional (3D) structure of all the molecules found in the natural world. No one knows exactly how many structures that entails, but certainly, he says,... More »
A spacecraft headed for the Moon is spending the summer in the foothills above Pasadena, getting rattled, blasted with sound, and baked in simulated space — all before it ever leaves the ground. Astrobotic’s Griffin-1 lunar lander, which NASA has designated Mo... More »
On a planet where the sun never sets and never fully rises, the concert never ends. That is the premise of the latest poster from NASA’s Jet Propulsion Laboratory, which imagines a rock show on the surface of Proxima Centauri b — the closest known planet outsi... More »
NASA’s Juno mission has produced the first measurements of the temperature below the surface of Io, the most volcanically active world in the solar system, in a study whose lead author works at NASA’s Jet Propulsion Laboratory in Pasadena. The measurements rev... More »
Two new multi-institution collaborations led by Caltech scientists have been selected to receive first-round funding from the U.S. Department of Energy (DOE) as part of the Genesis Mission, a national effort to use AI to accelerate scientific discovery. The fi... More »
