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Welcome
Scientists at 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.
The above image is a map tracing the voyages that the Carnegie and the Galilee research vessels undertook, beginning in 1905.
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Tuesday, 21 August 2007 |
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NAI Fellow Hannah Jang-Condell will leave DTM on 1 September for a Michelson Fellowship at the University of Maryland and NASA Goddard Space Flight Center. For the last three years, Jang-Condell has been studying planetary formation theory, focusing on disk-planet interactions. One of her main projects has been to model the effect of stellar heating on the surfaces of disks perturbed by forming planets. She has worked with Alan Boss’s disk instability models, in addition to creating her own models of planets forming by core accretion. From these models, Jang-Condell was able to predict observable signatures of planets forming in disks, and in particular, she determined how to distinguish between core accretion and disk instability. Jang-Condell has also worked to put limitations on the possibility of planet formation in close binary systems. She showed that a possible planet in the multiple-star system HD 188753 could not have formed in situ, and indeed, with follow-up observations of the system, the planet’s existence failed to be confirmed.
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Friday, 17 August 2007 |
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Visiting Investigator Steve Richardson of the University of Cape Town, South Africa, arrived this week for a three-month visit to work with Steve Shirey and Rick Carlson on several natural diamond dating projects.
Richardson is joined by one of his students, Karen Smit, who will be visiting DTM for a month, cutting and polishing diamond plates from a suite of Ellendale diamonds from Western Australia. Richardson and his DTM colleagues will be investigating a range of periodotitic and eclogitic diamonds from areas on the Kaapvaal Craton, including Venetia, Premier, and Letseng.
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Wednesday, 15 August 2007 |
Photo courtesy The Washington Post.
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Former DTM employee Ralph Alpher passed away on 12 August. Alpher was recently awarded the National Medal of Science, as reported on 16 July, for his development of the big bang theory, his work in nucleosynthesis, and his prediction that the expansion of the universe leaves a pervasive radiation field. Alpher was employed by DTM between 1938 and 1940 as a secretary while he attended George Washington University. During World War II, he worked as a researcher under Merle Tuve. For The Washington Post obituary, click here. |
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