NASA’s Planet Hunter Completes Its Primary Mission

TESS exoplanet satellite (Credit: NASA)

by Francis Reddy
NASA’s Goddard Space Flight Center

Greenbelt, Md. — On July 4, NASA’s Transiting Exoplanet Survey Satellite (TESS) finished its primary mission, imaging about 75% of the starry sky as part of a two-year-long survey. In capturing this giant mosaic, TESS has found 66 new exoplanets, or worlds beyond our solar system, as well as nearly 2,100 candidates astronomers are working to confirm.  

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NASA’s TESS Delivers New Insights Into an Ultrahot World

This illustration shows how planet KELT-9 b sees its host star. Over the course of a single orbit, the planet twice experiences cycles of heating and cooling caused by the star’s unusual pattern of surface temperatures. Between the star’s hot poles and cool equator, temperatures vary by about 1,500 F (800 C). This produces a “summer” when the planet faces a pole and a “winter” when it faces the cooler midsection. So every 36 hours, KELT-9 b experiences two summers and two winters. [Credit: NASA’s Goddard Space Flight Center/Chris Smith (USRA)]

By Francis Reddy
NASA’s Goddard Space Flight Center

Greenbelt, Md. — Measurements from NASA’s Transiting Exoplanet Survey Satellite (TESS) have enabled astronomers to greatly improve their understanding of the bizarre environment of KELT-9 b, one of the hottest planets known.

“The weirdness factor is high with KELT-9 b,” said John Ahlers, an astronomer at Universities Space Research Association in Columbia, Maryland, and NASA’s Goddard Space Flight Center in Greenbelt, Maryland. “It’s a giant planet in a very close, nearly polar orbit around a rapidly rotating star, and these features complicate our ability to understand the star and its effects on the planet.”

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NASA’s Next Exoplanet Satellite Arrives at NASA Kennedy

The Transiting Exoplanet Survey Satellite arrives at NASA’s Kennedy Space Center, where it will undergo final preparations for launch. (Credits: NASA’s Kennedy Space Center)

KENNEDY SPACE CENTER, Fla. (NASA PR) — NASA’s next planet-hunting mission has arrived in Florida to begin preparations for launch. The Transiting Exoplanet Survey Satellite (TESS) is scheduled to launch on a SpaceX Falcon 9 rocket from Cape Canaveral Air Force Station nearby NASA’s Kennedy Space Center in Florida no earlier than April 16, pending range approval.

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