TESS mission

The Transiting Exoplanet Survey Satellite (TESS) is a two-year survey that will discover exoplanets in orbit around bright stars.

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Proposing science

The TESS Guest Investigator Program is an annual call where scientists can propose new observations and receive funding and support.

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Data access

Access simulated data, documentation, data analysis software, and find information on the follow-up observing program.

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News for scientists

TESS successfully completes lunar flyby

TESS successfully completed a lunar flyby on 17 May at 06:34:35 UTC (2:34 AM EST). At its closest approach, TESS was 8,253 km from the lunar surface. Based on the successful lunar fly-by, no adjustment burn was required. The next maneuver is the Period Adjust Maneuver ...

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TESS commissioning nominal and on track for lunar encounter

TESS commissioning has been nominal. The space craft has undergone several phasing orbit burns and turn on and checkout of key subsystems. Since launch on April 18, TESS has reached many mission milestones that include:

  • Separation from the Falcon 9 second stage, solar array deployment, and first contact with NASA ...

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Three-body dynamics in the TESS orbit

TESS is making it's way through the phasing orbits, onward to the lunar flyby on May 18. Papers describing the peculiarities and intricacies of the orbit are available in papers from 2014 and 2016 on our documentation page.

While in the final science orbit, TESS, like anybody in a three-body ...

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Successful TESS launch

We are delighted that TESS was successfully delivered into space on a SpaceX Falcon 9 rocket. TESS launched April 18 at 6:51 p.m. EDT from Cape Canaveral Air Force Station, roughly 40 minutes later TESS separated from the second stage. Shortly after, solar arrays were deployed and telemetry ...

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TESS launch today!

UPDATE - Now targeting April 18 for launch.

TESS will launch aboard a SpaceX Falcon 9 rocket on Monday April 16 at 6:32 pm from Space Launch Complex 40 at Cape Canaveral Airforce Station! The TESS spacecraft has been fueled and encapsulated in the rocket fairing and the Falcon 9 ...

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