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11/29/2010

## Recent News on the Debate over Pluto's Planethood

Kathy Svitil

Earlier this month, Eris—the distant world first discovered by Caltech's Mike Brown and colleagues back in 2005, paving the way for the eventual demotion of Pluto from planet to dwarf planet—passed fortuitously in front of a faint star in the constellation Cetus. That passage, or occultation, allowed the first direct measurement of Eris's size.

10/18/2010

## ShakeOut 2010

Margaret Vinci

On October 21 at 10:21 a.m., businesses, nonprofits, schools, governments, neighborhoods, organizations, families, and others throughout the state will practice the "Drop, Cover, and Hold On" protocol as part of the Great California ShakeOut statewide earthquake drill.

09/14/2010

08/31/2010

## Caltech Mineral Physicists Find New Scenery at Earth's Core-Mantle Boundary

Kathy Svitil

Using a diamond-anvil cell to recreate the high pressures deep within the earth, researchers at the California Institute of Technology (Caltech) have found unusual properties in an iron-rich magnesium- and iron-oxide mineral that may explain the existence of several ultra-low velocity zones (ULVZs) at the core-mantle boundary. A paper about their findings was published in a recent issue of Geophysical Research Letters (GRL).

08/25/2010

## New View of Tectonic Plates

Kathy Svitil

Computational scientists and geophysicists at the University of Texas at Austin and Caltech have developed new computer algorithms that for the first time allow for the simultaneous modeling of the earth's mantle flow, large-scale tectonic plate motions, and the behavior of individual fault zones, to produce an unprecedented view of plate tectonics and the forces that drive it.

08/15/2010

## NRC Recommends Three Astronomy/Astrophysics Projects with Potential Major Caltech Roles

Kathy Svitil

In an announcement August 13, the National Research Council recommended three space- and ground-based astronomy and astrophysics projects with potential major roles for researchers at Caltech: CCAT, a giant submillimeter telescope that will help unravel the origins of stars, planets, and galaxies; LISA, designed to detect gravitational waves; and the development of a Giant Segmented Mirrored Telescope—the Thirty Meter Telescope being one of two such telescopes under development.

08/01/2010

## Caltech, Canadian Space Agency Awarded NASA Project to Develop Spectrometer Headed to Mars

Lori Oliwenstein

Caltech and the Canadian Space Agency announced today that they will be partnering on the development of the Mars Atmospheric Trace Molecule Occultation Spectrometer (MATMOS) instrument to be flown aboard the ExoMars Trace Gas Orbiter when it launches in 2016.

07/27/2010

## Caltech Astronomer Finds Planets in Unusually Intimate Dance around Dying Star

Kathy Svitil

Hundreds of extrasolar planets have been found, most solitary worlds orbiting their parent star in seeming isolation. Further observation has revealed that planets come in bunches. Most systems contain planets orbiting too far from one another to feel each other's gravity. In a handful of cases, planets have been found near enough to one another to interact gravitationally. Now, however, Caltech's John A. Johnson and his colleagues have found two systems with pairs of gas giant planets locked in an intimate orbital embrace.

07/21/2010

## Caltech Team Finds Evidence of Water in Moon Minerals

Lori Oliwenstein

That dry, dusty moon overhead? Seems it isn't quite as dry as it's long been thought to be. Although you won't find oceans, lakes, or even a shallow puddle on its surface, a team of geologists has found structurally bound hydroxyl groups (i.e., water) in a mineral in a lunar rock returned to Earth by the Apollo program.

07/14/2010

## Caltech Scientists Measure Changing Lake Depths on Titan

Kathy Svitil

On Earth, lake levels rise and fall with the seasons and with longer-term climate changes, as precipitation, evaporation, and runoff add and remove liquid. Now, for the first time, scientists have found compelling evidence for similar lake-level changes on Saturn's largest moon, Titan—the only other place in the solar system seen to have a hydrological cycle with standing liquid on the surface.