10/19/2016 12:15:29
Robert Perkins
"Planet Nine," which may lurk beyond Neptune, may be the reason that the solar system's planets orbit at a six-degree angle with respect to the sun.
artistic rendering of Planet Nine
02/16/2016 12:39:57
On February 26, some of the nation's leading scientists and researchers—including five Nobel laureates and members of all three National Academies—will gather at Caltech to discuss some of the most perplexing questions facing humanity.
01/20/2016 07:09:29
Kimm Fesenmaier
The giant planet, discovered through mathematical modeling and computer simulations, is nicknamed Planet Nine and traces a bizarre, highly elongated orbit in the outer solar system.
artistic rendering of Planet Nine
11/24/2015 10:29:05
Kimm Fesenmaier
Caltech and JPL researchers identify a process involving UV light from the sun that helps explain how a moderately dense martian atmosphere 3.8 billion years ago could have evolved into the current thin one without invoking a missing carbon reservoir.
11/17/2015 08:42:27
On its way to higher layers of the mountain where it is investigating how Mars' environment changed billions of years ago, NASA's Curiosity Mars rover will take advantage of a chance to study some modern Martian activity at mobile sand dunes.
10/18/2015 05:00:00
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.
10/12/2015 13:42:34
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.
09/21/2015 10:40:13
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.
09/01/2015 12:09:53
Lori Dajose
Yuk Yung, the Smits Family Professor of Planetary Science, has received the 2015 Gerard P. Kuiper Prize from the American Astronomical Society's Division for Planetary Sciences.
07/14/2015 09:38:10
Rod Pyle
July 14 marks 50 years of visual reconnaissance of the solar system by NASA's Jet Propulsion Laboratory (JPL), beginning with Mariner 4's flyby of Mars in 1965.
06/03/2015 09:56:55
Douglas Smith
Feynman Teaching Award winner Mike Brown ventures into new fields of instruction: the Massive Open Online Course, or MOOC, and the "flipped" classroom, which inverts the traditional arrangement of listening to lectures in class and doing assignments at home.
Caltech planetary science professor Mike Brown
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