We explore & discover

Scientists at the Department of Terrestrial Magnetism (DTM) bring the perspective of several disciplines to broad questions about nature. DTM's name comes from its original role to chart the Earth's magnetic field. This goal was largely accomplished by 1929. Since then, DTM has evolved to reflect the growing multi-disciplinary nature of the Earth, planetary, and astronomical sciences. Today, the historic goal remains to understand the physical Earth and the universe that is our home.

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Upcoming Events

"Evolution of the Lunar Core Dynamo"
Sonia Tikoo (DTM Weekly Seminar Series)
Thursday, February 23, 2017

"Origin of Phobos and Deimos"
Robin Canup (DTM Weekly Seminar Series)
Thursday, March 2, 2017

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Latest articles and news

Seven Earth-Size Planets Identified: What Does it Mean?

7 Planets

Orbiting a star called TRAPPIST-1 not too far away, lie at least seven Earth-size planets that may have temperatures similar to Earth's. This discovery was announced today, February 22, 2017, at a news conference at NASA Headquarters. The study is published in the journal Nature. Here's a quick breakdown from some of our astronomers of why this discovery is important and just how Earth-like these planets really are.

Remembering Vera

Vera Rubin

Renowned astronomer and National Medal of Science awardee Vera Rubin passed away in Princeton, NJ, the evening of December 25, 2016, at the age of 88. In this tribute, we remember Vera for everything she did both in her field of research, and in her life. 

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Image Gallery

DTM scientists regularly explore our planet and the universe. Along the way they capture images of stunning landscapes, geophysical processes and data visualizations.

Browse DTM’s online image gallery to share in the journey of scientific exploration and discovery.

Browse Gallery


Sonia Tikoo

Sonia Tikoo (MIT) discussed the evolution of the lunar core dynamo at this week's DTM seminar on Feb. 23.

Jesse Reimink

Postdoc Spotlight: Jesse Reimink discusses how his childhood fascination with science and the outdoors led to a passion for geology. 

Joel Kastner

Joel Kastner gave us a close look at the nearest known planet-forming disks at his Tuve lecture on Feb. 16.