California Institute of Technology

Developing a picture of the Earth's mantle

Deep inside the earth, seismic observations reveal that three distinct structures make up the boundary between the earth's metallic core and overlying silicate mantle at a depth of about 2,900 kilometers—an area whose composition ...

dateDec 14, 2015 in Earth Sciences
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Dark matter dominates in nearby dwarf galaxy

Dark matter is called "dark" for a good reason. Although they outnumber particles of regular matter by more than a factor of 10, particles of dark matter are elusive. Their existence is inferred by their gravitational influence ...

dateNov 18, 2015 in Astronomy
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Advanced LIGO to begin operations

The Advanced LIGO Project, a major upgrade of the Laser Interferometer Gravitational-Wave Observatory, is completing its final preparations before the initiation of scientific observations, scheduled to begin in mid-September. ...

dateSep 16, 2015 in Astronomy
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Chemists solve major piece of cellular mystery

Not just anything is allowed to enter the nucleus, the heart of eukaryotic cells where, among other things, genetic information is stored. A double membrane, called the nuclear envelope, serves as a wall, protecting the contents ...

dateAug 27, 2015 in Biochemistry
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