Earth and Planets Laboratory

Earth and Planets Laboratory
Name	Earth and Planets Laboratory
Established	2020
Research field	Geophysics, Planetary science, Geochemistry, Mineral physics
Director	Michael Walter
Parent organization	Carnegie Institution for Science
City	Washington, D.C.
Country	United States

Earth and Planets Laboratory. A premier research center dedicated to understanding the formation, evolution, and dynamics of Earth and other planetary bodies. It was formed in 2020 through the merger of two historic Carnegie Institution for Science departments: the Department of Terrestrial Magnetism and the Geophysical Laboratory. The laboratory integrates diverse scientific disciplines to investigate fundamental questions in Earth science and planetary science, from the deep interior of our planet to the far reaches of the Solar System.

History and establishment

The laboratory represents the unification of two of the oldest and most distinguished research departments in American science. The Department of Terrestrial Magnetism was founded in 1904, initially focusing on mapping Earth's magnetic field and later pioneering work in nuclear physics and radio astronomy. Concurrently, the Geophysical Laboratory was established in 1905, becoming a world leader in experimental petrology and high-pressure physics. This merger under the Carnegie Institution for Science was designed to foster interdisciplinary collaboration, combining strengths in observational astronomy, geochemistry, and materials science to address complex planetary-scale problems.

Research and scientific focus

Research is broadly organized around several interconnected themes. Scientists study planetary interiors and processes, investigating the properties of materials under the extreme pressures and temperatures found within Earth's core and mantle as well as within icy moons like Europa. Another major focus is planetary origins and evolution, examining meteorites like Allende and using isotope geochemistry to date events in the early Solar System. The laboratory also has a strong program in astrobiology and extreme environments, exploring the limits of life and the potential habitability of other worlds. Work in seismology and geodynamics helps model planetary tectonics and mantle convection.

Facilities and instrumentation

The laboratory houses state-of-the-art equipment for simulating and analyzing planetary conditions. Its flagship facility is the High-Pressure Collaborative Access Team at the Advanced Photon Source, a synchrotron user facility at Argonne National Laboratory. On-site, researchers utilize multi-anvil presses and diamond anvil cell techniques to replicate the deep interiors of planets. Analytical capabilities include secondary ion mass spectrometry via a Cameca ims-1280 for precise isotopic measurements, as well as a suite of electron microprobe and laser ablation systems. The laboratory also maintains the Earthtime initiative, which provides critical geochronological standards.

Key discoveries and contributions

Researchers have made foundational contributions to modern science. Early work at the Department of Terrestrial Magnetism led to the discovery of deuterium by Harold Urey and the first measurement of the fine-structure constant. The Geophysical Laboratory developed the foundational Bowen's Reaction Series and pioneered the pyroxene quadrilateral classification. More recently, scientists provided key evidence for water in Earth's mantle and constrained the timing of Moon formation using hafnium-tungsten dating. The laboratory also played a central role in the discovery and characterization of post-perovskite, a major mineral phase in Earth's lowermost mantle.

Organizational structure and affiliations

The laboratory is a division of the Carnegie Institution for Science, a private nonprofit research organization based in Washington, D.C.. It is led by Director Michael Walter and comprises a staff of staff scientists, postdoctoral fellows, and support personnel. It maintains close collaborative ties with major research universities, NASA, and the National Science Foundation. The laboratory is also a core participant in the Center for High Pressure Science & Technology Advanced Research and hosts numerous visiting researchers from institutions worldwide, fostering a global scientific network.

Education and public outreach

The laboratory is committed to training the next generation of scientists and engaging the public. It hosts a vibrant postdoctoral researcher program and regularly mentors graduate students from partner universities like the University of California, Berkeley and the University of Chicago. Public engagement efforts include hosting lectures as part of the Carnegie Science series, providing tours for local schools, and contributing to exhibitions at the Smithsonian Institution. Scientists frequently collaborate with media outlets such as National Geographic and the BBC to communicate discoveries about our planet and the cosmos.

Category:Carnegie Institution for Science Category:Research institutes in Washington, D.C. Category:Planetary science institutes Category:Geophysics organizations