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10/27/2015

Probing the Mysteries of Europa, Jupiter's Cracked and Crinkled Moon

Rod Pyle
Using data from the W. M. Keck Observatory's OSIRIS spectrometer and maps from NASA's Galileo probe, researchers have mapped what may be salt deposits from the ocean below the ice onto the Jovian moon's surface.
Europa, as imaged by NASA's Galileo spacecraft.
10/18/2015

Cassini Begins Its Final Act: A Conversation with Charles Elachi

Ramanuj Basu
In September, the NASA/JPL Cassini mission began the last two years of the Solstice Mission. We recently spoke with JPL director Charles Elachi to gain his unique perspective on Cassini's achievements—and what will come next.
10/13/2015

Taking Dinosaur Temperatures with Eggshells

Lorinda Dajose
A team of Caltech researchers has measured the body temperatures of a wide range of dinosaurs, providing insight into how the animals may have regulated their internal heat.
10/12/2015

The Rosetta Mission's Rendezvous with the Rubber-Duckie Comet

Douglas Smith
Rosetta, named for the inscribed stone that allowed 19th-century historians to unlock the secrets of ancient Egypt, is unlocking the secrets of a far more ancient comet.
Composite Rosetta image of comet 67P/Churyumov-Gerasimenko.
10/08/2015

Wet Paleoclimate of Mars Revealed by Ancient Lakes at Gale Crater

Rod Pyle
New evidence indicates that Gale Crater on Mars was filled with water-borne sediment, and excavated, in a shorter time than previously thought, leaving the base of Mount Sharp behind.
10/06/2015

Alumnus Arthur McDonald Wins 2015 Nobel Prize in Physics

Douglas Smith
Arthur B. McDonald (PhD '70), director of the Sudbury Neutrino Observatory (SNO) in Ontario, Canada, and Takaaki Kajita, at the University of Tokyo, Kashiwa, Japan, have shared the 2015 Nobel Prize in Physics for the discovery that neutrinos can change their identities as they travel through space.
09/30/2015

Summer Interns Return with a World of Experiences

Shayna Chabner McKinney
Caltech undergraduate students returned to campus this week, many after spending the summer working at companies in biotechnology, technology, and finance, among other fields. These students have had the opportunity to learn firsthand about the career opportunities and paths that may be available to them after graduation.
09/28/2015

New Courses for the 2015–16 School Year

Lorinda Dajose
The start of the 2015–2016 school year brings not only new freshmen and faculty, but also new courses.
09/21/2015

Getting the Lead Out

Douglas Smith
Caltech geochemist Clair Patterson (1922–1995) helped galvanize the environmental movement 50 years ago when he announced that highly toxic lead could be found essentially everywhere on Earth, including in our own bodies—and that very little of it was due to natural causes.
Clair Patterson and distillation apparatus.
09/17/2015

Flowing Electrons Help Ocean Microbes Gulp Methane

Jessica Stoller-Conrad
The key to any healthy relationship is communication. Two types of microbes near the ocean floor use direct electron transfer to coordinate their symbiotic relationship—which results in the consumption of large amounts of methane from deep ocean vents.