Science and Technology
JPL Offers Download Poster of New Exoplanet Discovery

Credit NASA-JPL/Caltech Scientists working at the Infrared Processing and Analysis Center (IPAC) at Caltech in Pasadena were part of an international science team that recently discovered the first known system of seven Earth-size planets around a single star. Three of these planets are firmly located in the habitable zone, the area around the parent star where a rocky planet is most likely to have liquid…

Scientists Led by Caltech Team Perfecting Method to Rid Fuel of Pollution-Causing Sulfur

The ability to reduce sulfur in fuels is an important step toward reducing emissions. However, extremely low levels can be difficult to achieve. Now, Caltech researchers have demonstrated an unorthodox approach that lowers sulfur content…

Caltech Professor Finds Electrons Use DNA Like a Wire for Signaling DNA Replication

A protein called DNA primase (tan) begins to replicate DNA when an iron-sulfur cluster within it is oxidized, or loses an electron (blue and purple). Once this primase has made an RNA primer, a protein…

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…

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…

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…

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…

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…

JPL’s Curiosity Rover Sharpens Paradox of Ancient Mars

Bedrock at this site added to a puzzle about ancient Mars by indicating that a lake was present, but that little carbon dioxide was in the air to help keep a lake unfrozen. Image credit: NASA/JPL-Caltech/MSSS Mars scientists are wrestling with a problem. Ample evidence says ancient Mars was sometimes wet, with water flowing and pooling on the planet’s surface. Yet, the ancient sun was about one-third less warm and climate modelers struggle to produce scenarios that get the surface of Mars warm enough for keeping water unfrozen. A leading theory is to have a thicker carbon-dioxide atmosphere forming a…

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