Research

Exoplanets

In the past 25 years, Exoplanet research –the study of planets orbiting distant stars– has grown from niche sub-field of astronomy with a handful of scientists worldwide, to a major-discipline that has captured the attention of the public and is driving plans for some of NASA’s and the European Space Agency’s largest next generation flagship missions.

SETI Institute scientists have been at the forefront of this boom. SETI Institute scientists developed and led the data processing and analysis for NASA’s Kepler Mission, responsible for detecting sixty percent of the nearly 6000 known exoplanets to date. A SETI Institute team currently carries out science processing operations and analysis for NASA’s Transiting Exoplanet Survey Satellite (TESS), which has found over six hundred planets and has an additional seven thousand plus candidates awaiting further study. SETI Institute scientists lead a worldwide Citizen Science network that detects and characterizes exoplanets using small personal telescopes.

In addition to detecting planets, SETI Institute scientists use space-based and both large and small ground-based telescopes to uncover the details of these exoplanets. By studying their physical characteristics and measuring their atmospheres, we hope to understand their surface conditions, climate, and potential for habitability.

SETI Institute Exoplanet scientists use computer models to study planetary systems and directly image young stars and their planet-forming disks, to identify and better understand key steps in planet formation and evolution.

We are working on developing small missions to observe young exoplanets and to study the Earth and other Solar System planets as exoplanets. Our Exoplanet researchers are working on several fronts to prepare for the flagship missions that will image and search for signs of life in the atmospheres of nearby Earth-size planets. This preparatory work involves studying exoplanet populations, identifying suitable target stars, modeling exoplanet climates and atmospheric spectral signatures, and developing and refining key instrument technologies that will allow us to observe a planet that is 10 billion times fainter than its nearby host star.

Exoplanet Researchers

News

Exoplanets

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Jan 11, 2022
Free-floating Planets Abound in Milky Way
Researchers discovered at least seventy free-floating planets in a region of the Milky Way known as the Upper Scorpius OB stellar association. #Exoplanets
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Feb 10, 2022
Citizen Science Highlights in 2021
The SETI Institute is Unistellar’s scientific partner, helping citizen scientists make meaningful contributions to astronomy. #Unistellar #Partnerships #Astronomy #Exoplanets
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Mar 10, 2025
“Tatooine” Planet Seen From Earth
Using radial velocity, astronomers at the 193-centimeter telescope at the Observatoire de Haute-Provence were able to detect the known exoplanet Kepler-16b. #Exoplanets #Kepler #Astronomy