Science and Technology
NASA/JPL Revealed Discovery of 7 Earth-Sized Planets Existing In A Habitable Zone Around a Single Star

This artist’s impression shows a view of the surface of the planet Proxima b orbiting the red dwarf star Proxima Centauri, the closest star to the solar system. The double star Alpha Centauri AB also appears in the image. Proxima b is a little more massive than the Earth and orbits in the habitable zone around Proxima Centauri, where the temperature is suitable for liquid…

JPL Telescope Reveals Largest Batch of Earth-Size, Habitable-Zone Planets Around Single Star

Habitable-Zone Planets Around Single Star Imagine standing on the surface of the exoplanet TRAPPIST-1f. This artist's concept is one interpretation of what it could look like. Image Credit: NASA/JPL-Caltech NASA’s Spitzer Space Telescope has revealed…

Photons, Electrons, Silicon: Caltech’s Electric Light Orchestra

Amnon Yariv, Azita Emami, Kerry Vahala, and Ali Hajimiri Credit: EAS Communications Office/Caltech Caltech has long brought together masters from many fields to create the unimaginable. In the field of silicon photonics, in particular, the…

Sleeping With the (Zebra) Fishes

David Prober Credit: Caltech People can reject food and control their thirst, but we cannot keep from falling asleep. Even though we spend a third of our lives asleep and treat the prevalence of sleep…

JPL’s Spitzer Space Telescope Hears Stellar ‘Heartbeat’ from Planetary Companion

This illustration shows how the planet HAT-P-2b, left, appears to cause heartbeat-like pulsations in its host star, HAT-P-2. Image credit: NASA/JPL-Caltech A planet and a star are having a tumultuous romance that can be detected…

Lasers Could Give Space Research its ‘Broadband’ Moment

Several upcoming NASA missions will use lasers to increase data transmission from space. Image Credit: NASA's Goddard Space Flight Center/Amber Jacobson, producer Thought your Internet…

Caltech Mourns the Passing of Alumnus Warren G. Schlinger, Clean Energy Pioneer

Katharine Stewart Schlinger and Warren G. Schlinger at the 2010 dedication of Caltech's Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Chemical engineer…

Caltech Astronomer Receives $1 Million Prize Given for “Outstanding Scientific, Technological, Cultural or Social Impact on Our World”

Left: Shrinivas (Shri) Kulkarni, Right: Distinguished Alumni Award Recipient Neil Gehrels (PhD ’82, Physics); Credit: Caltech Shrinivas (Shri) Kulkarni, the John D. and Catherine T.…

NASA Studies a Rarity: Growing Louisiana Deltas

False-color images of rising tide at Wax Lake Delta, Louisiana, made by JPL's Uninhabited Aerial Vehicle Synthetic Aperture Radar instrument on Oct. 17, 2016. Red,…

Caltech Mourns Harold Rosen, the “Father of Geostationary Satellite Communications,” 1926-2017

Harold Rosen Credit: Boeing Harold Rosen (MS ’48, PhD ’51), the father of geostationary satellite communications, passed away on January 30, 2017. He was 90. Modern communications technology relies on a fleet of hundreds of satellites orbiting in fixed locations above the earth’s surface. These geostationary satellites, as they are known, act as communications relays, allowing for near-instantaneous signal transmission across the globe without the need for wired networks. And without Harold Rosen, they would not exist. Harold Rosen was born on March 20, 1926, in New Orleans and graduated from high school at age 15. He showed an early…

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