Sarah Stewart was awarded a prestigious MacArthur fellowship for: “Advancing new theories of how celestial collisions give birth to planets and their natural satellites, such as the Earth...
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Washington, DC—Carnegie’s Scott Sheppard and his colleagues—Northern Arizona University’s Chad Trujillo,...
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Erik Hauri in the lab at Carnegie's Department of Terrestrial Magnetism
Washington, DC—Carnegie geochemist Erik Hauri, whose work upended our understanding of the Moon’s formation and the importance of water in Earth’s interior, died Wednesday in North...
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Visualization rendered by Dan Tell from the California Academy of Sciences using SCISS Uniview software and directed/written by Jackie Faherty from the American Museum of Natural History.
Washington, DC—New work from Carnegie’s Jonathan Gagné and the American Museum of Natural History’s Jacqueline Faherty identified nearly a thousand potential members and 31...
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: A blue, boron-bearing diamond with dark inclusions of a mineral called ferropericlase, which were examined as part of this study.  This gem weighs 0.03 carats.  Photo by Evan Smith/GIA.
Washington, DC—Blue diamonds—like the world-famous Hope Diamond at the National Museum of Natural History—formed up to four times deeper in the Earth’s mantle than most other...
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An illustration showing how the orbits of the newly discovered moons (bold) fit into the known orbital groupings of the Jovian moons (not bold). The "oddball" with the proposed name Valetudo orbits in the prograde, but crosses the orbits of the planet's o
Washington, DC—Twelve new moons orbiting Jupiter have been found—11 “normal” outer moons, and one that they’re calling an “oddball.”  This brings...
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Washington, DC—A team of scientists including Carnegie’s Michael Ackerson and Bjørn Mysen revealed that granites from Yosemite National Park contain minerals that crystallized at...
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Andrew Steele joins the Rosetta team as a co-investigator working on the COSAC instrument aboard the Philae lander (Fred Goesmann Max Planck Institute - PI). On 12 November 2014 the Philae system will be deployed to land on the comet and begin operations. Before this, several analyses of the comet...
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The WGESP was charged with acting as a focal point for research on extrasolar planets and organizing IAU activities in the field, including reviewing techniques and maintaining a list of identified planets. The WGESP developed a Working List of extrasolar planet candidates, subject to revision. In...
Explore this Project
CALL FOR PROPOSALS Following Andrew Carnegie’s founding encouragement of liberal discovery-driven research, the Carnegie Institution for Science offers its scientists a new resource for pursuing bold ideas. Carnegie Science Venture grants are internal awards of up to $100,000 that are...
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Peter Driscoll studies the evolution of Earth’s core and magnetic field including magnetic pole reversal. Over the last 20 million or so years, the north and south magnetic poles on Earth have reversed about every 200,000, to 300,000 years and is now long overdue. He also investigates...
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Rocks, fossils, and other natural relics hold clues to ancient environments in the form of different ratios of isotopes—atomic variants of elements with the same number of protons but different numbers of neutrons. Seawater, rain water, oxygen, and ozone, for instance, all have different...
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While the planets in our Solar System are astonishingly diverse, all of them move around the Sun in approximately the same orbital plane, in the same direction, and primarily in circular orbits. Over the past 25 years Butler's work has focused on improving the measurement precision of stellar...
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Washington, D.C.— An international team of scientists led by Carnegie’s Guillem Anglada-Escudé and Paul Butler has discovered a potentially habitable super-Earth orbiting a nearby star. The star is a...
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Washington, D.C.—On March 17, the tiny MESSENGER spacecraft completed its primary mission to orbit and observe the planet Mercury for one Earth-year. The bounty of surprises from the mission has...
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Washington, DC — A team of scientists, including Carnegie's Conel Alexander and Jianhua Wang, studied the hydrogen in water from the Martian interior and found that Mars formed from similar building...
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LaPaz Icefield 02342 seen here in thin section under polarized light courtesy of  Carles Moyano-Cambero.
April 15, 2019

Washington, DC—An ancient sliver of the building blocks from which comets formed was discovered encased inside a meteorite like an insect in amber by a Carnegie-led research team. The finding, published by Nature Astronomy, could offer clues to the formation and evolution of our Solar System.

Meteorites were once part of larger bodies, asteroids, which broke up due to collisions in space and survived the trip through the Earth’s atmosphere. Their makeup can vary substantially from meteorite to meteorite, reflecting their varying origin stories in different parent bodies that formed in different parts of the Solar System. Asteroids and comets both formed from the disk

Artist's conception of HD 21749c, the first Earth-sized planet found by NASA's Transiting Exoplanets Survey Satellite (TESS) by Robin Dienel courtesy of Carnegie Institution for Science
April 15, 2019

Pasadena, CA—A nearby system hosts the first Earth-sized planet discovered by NASA’s Transiting Exoplanets Survey Satellite, as well as a warm sub-Neptune-sized world, according to a new paper from a team of astronomers that includes Carnegie’s Johanna Teske, Paul Butler, Steve Shectman, Jeff Crane, and Sharon Wang.

Their work is published in The Astrophysical Journal Letters.

“It’s so exciting that TESS, which launched just about a year ago, is already a game-changer in the planet-hunting business,” said Teske, who is second author on the paper. “The spacecraft surveys the sky and we collaborate with the TESS follow-up

Artist's conception. Credit Rensselaer Polytechnic Institute
February 14, 2019

Washington, DC—Carnegie’s Andrew Steele is a member of the Earth First Origins project, led by Rensselaer Polytechnic Institute’s Karyn Rogers, which has been awarded a $9 million grant by NASA’s Astrobiology Program.

The five-year project seeks to uncover the conditions on early Earth that gave rise to life by identifying, replicating, and exploring how prebiotic molecules and chemical pathways could have formed under realistic early Earth conditions.

The evolution of planet Earth and the emergence of life during its first half-billion years are inextricably linked, with a series of planetwide transformations – formation of the ocean,

Self-portrait of NASA's Curiosity Mars rover on Vera Rubin Ridge with Mount Sharp poking up just behind the vehicle's mast. Image is courtesy of NASA/JPL-Caltech/MSSS Curiosity.
January 31, 2019

Washington, DC—The density of rock layers on the terrain that climbs from the base of Mars’ Gale Crater to Mount Sharp is less dense than expected, according to the latest report on the Red Planet’s geology from a team of scientists including Carnegie’s Shaunna Morrison. Their work is published in Science.

Scientists still aren't sure how this mountain grew inside of the crater, which has been a longstanding mystery. 

One idea is that sediment once filled Gale Crater and was then worn away by millions of years of wind and erosion, excavating the mountain. However, if the crater had been filled to the brim, the material on the bottom, which

April 25, 2019

Gravity, the fundamental force that shaped our planet, varies across the Earth’s surface, both from place to place and over time. For more than three centuries, scientists have made gravity measurements to define the shape of the Earth. Today, very precise measurements of gravity provide crucial information on the mass distribution and transport within the planet. In this talk, Dr. Le Mével will highlight the long history of the determination of the gravity field, from the first field expeditions to the era of satellite measurements, and will discuss the evolution of the instrumentation. She will then show how gravity studies are used to image magmatic systems under

May 23, 2019

In shock-wave experiments, high-powered lasers or guns are used to send a supersonic pressure wave through a sample. This type of dynamic compression can generate immense pressure and allows for the study of impact phenomena in real time. These experiments have wide applications for Earth and planetary science, ranging from understanding the effects of meteorite impacts to studying the structure of planetary interiors. Dynamic experiments are short-lived, generally having a duration of tens of billionths of a second. This requires the development of ultrafast experiments. In this talk, Tracy will review new results using high-intensity pulsed x-rays to examine the crystal structure of

CALL FOR PROPOSALS

Following Andrew Carnegie’s founding encouragement of liberal discovery-driven research, the Carnegie Institution for Science offers its scientists a new resource for pursuing bold ideas.

Carnegie Science Venture grants are internal awards of up to $100,000 that are intended to foster entirely new directions of research by teams of scientists that ignore departmental boundaries. Up to six adventurous investigations may be funded each year. The period of the award is two

Andrew Steele joins the Rosetta team as a co-investigator working on the COSAC instrument aboard the Philae lander (Fred Goesmann Max Planck Institute - PI). On 12 November 2014 the Philae system will be deployed to land on the comet and begin operations. Before this, several analyses of the comet environment are scheduled from an approximate orbit of 10 km from the comet. The COSAC instrument is a Gas Chromatograph Mass Spectrometer that will measure the abundance of volatile gases and organic carbon compounds in the coma and solid samples of the comet.

Superdeep diamonds are  tiny time capsules carrying unchanged impurities made eons ago and providing researchers with important clues about Earth’s formation.  Diamonds derived from below the continental lithosphere, are most likely from the transition zone (415 miles, or 670km deep) or the top of the lower mantle. Understanding diamond origins and compositions of the high-pressure mineral phases has potential to revolutionize our understanding of deep mantle circulation.

The WGESP was charged with acting as a focal point for research on extrasolar planets and organizing IAU activities in the field, including reviewing techniques and maintaining a list of identified planets. The WGESP developed a Working List of extrasolar planet candidates, subject to revision. In most cases, the orbital inclination of these objects is not yet determined, which is why most should still be considered candidate planets. The WGESP ended its six years of existence in August 2006, with the decision of the IAU to create a new commission dedicated to extrasolar planets as a part of Division III of the IAU. The founding president of Commission 53 is Michael Mayor, in honor of

Scientists simulate the high pressures and temperatures of planetary interiors to measure their physical properties. Yingwei Fei studies the composition and structure of planetary interiors with high-pressure instrumentation including the multianvil apparatus, the piston cylinder, and the diamond anvil cell. 

The Earth was formed through energetic and dynamic processes. Giant impacts, radioactive elements, and gravitational energy heated the  planet in its early stage, melting materials and paving the way for the silicate mantle and metallic core to separate.  As the planet cooled and solidified geochemical and geophysical “fingerprints” resulted from

Andrew Steele uses traditional and biotechnological approaches for the detection of microbial life in the field of astrobiology and Solar System exploration. Astrobiology is the search for the origin and distribution of life in the universe. A microbiologist by training, his principle interest is in developing protocols, instrumentation, and procedures for life detection in samples from the early Earth and elsewhere in the Solar System.

Steele has developed several instrument and mission concepts for future Mars missions and became involved in the 2011 Mars Science Laboratory mission as a member of the Sample Analysis at Mars (SAM) team. For  a number of years he journeyed to

While the planets in our Solar System are astonishingly diverse, all of them move around the Sun in approximately the same orbital plane, in the same direction, and primarily in circular orbits. Over the past 25 years Butler's work has focused on improving the measurement precision of stellar Doppler velocities, from 300 meters per second in the 1980s to 1 meter a second in the 2010s to detect planets around other stars. The ultimate goal is to find planets that resemble the Earth.

Butler designed and built the iodine absorption cell system at Lick Observatory, which resulted in the discovery of 5 of the first 6 known extrasolar planets.  This instrument has become the de

Volcanologist Diana Roman is interested in the mechanics of how magma moves through the Earth’s crust, and in the structure, evolution, and dynamics of volcanic conduit systems. Her ultimate goal is to understand the likelihood and timing of volcanic eruptions.

Most of Roman’s research focuses on understanding changes in seismicity and stress in response to the migration of magma through volcanic conduits, and on developing techniques and strategies for monitoring active or restless volcanoes through the analysis of high-frequency volcanic seismicity.

Roman is also interested in understanding the seismicity at quiet volcanoes, tectonic and hidden volcanic