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Sarah Hörst

Sarah Hörst

Sarah Hörst

Dr. Horst is an Assistant Professor in the Department of Earth and Planetary Sciences at Johns Hopkins University. Previously, she worked with Dr. Roger Yelle at the University of Arizona’s Lunar and Planetary Laboratory, where she received her Ph.D. in 2011.

Her primary research interest is atmospheric chemistry. In particular, the complex organic chemistry occurring in the atmosphere of Titan. She also has interest in complex organics elsewhere in the solar system (and the universe!), and whether they are produced in an atmosphere or on a surface.

Latest Blog Posts

Clouds and haze and dust, oh my!

March 24, 2016

What types of aerosols do we find in the atmospheres around the Solar System, and why does what we call them—clouds vs. haze vs. dust—matter? Sarah Hörst explains.

What in the world(s) are tholins?

July 22, 2015

The question “why is Pluto red” has been answered with a word that most people have never heard of and perhaps even fewer people can actually define—“tholins”.

Probing Titan's Atmosphere

August 26, 2013

By now I hope that everyone has seen some of the spectacular images of the Saturn system (and especially Titan!) from the Cassini-Huygens mission. However, the measurements that often make my heart race are taken by instruments that reveal Titan in ways that our eyes cannot see.

astronaut on Phobos
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