Dimitar Sasselov
Dimitar Sasselov works on uniting the physical and life sciences in the hunt for answers to the question of how life began.
Dimitar Sasselov is an astronomer who explores the interaction between light and matter.
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Full Bio
Dimitar Sasselov is an astronomer who explores the interaction between light and matter. He studies, among other things, extrasolar planets, and he’s a co-investigator on NASA’s Kepler mission, which is monitoring 100,000 stars in a three-year hunt for exoplanets — including Jupiter-sized giants. Sasselov watches for exoplanets by looking for transits, the act of a planet passing across the face of its star, dimming its light and changing its chemical signature. This simple, elegant way of searching has led to a bounty of newly discovered planets.
Sasselov is the director of Harvard’s Origins of Life Initiative, a new interdisciplinary institute that joins biologists, chemists and astronomers in searching for the starting points of life on Earth (and possibly elsewhere). What is an astronomer doing looking for the origins of life, a question more often asked by biologists? Sasselov suggests that planetary conditions are the seedbed of life; knowing the composition and conditions of a planet will give us clues, perhaps, as to how life might form there. And as we discover new planets that might host life, having a working definition of life will help us screen for possible new forms of it. Other institute members such as biologist George Church and chemist George Whitesides work on the question from other angles, looking for (and building) alternative biologies that might fit conditions elsewhere in the universe.
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Topics
An Evening With Dimitar Sasselov
Videos
Dimitar Sasselov: How we found hundreds of Earth-like planets
Dimitar Sasselov - How Did Matter Form in the Early Universe?
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