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Total and Spectral Solar Irradiance Sensor-2 (TSIS-2)

NASA's Total and Spectral Solar Irradiance Sensor – 2, or TSIS-2, will measure the Sun's energy input to Earth.

  • NASA’s Mission to Study Sunlight Completes Vacuum, Vibration Testing

    The TSIS-2 satellite sits on a board just outside of a large circular entrance to a testing chamber. The satellite has wires, hardware, and foil-looking material covering some parts of the large spacecraft.

    Bright white lights reflect off the metallic hardware of a satellite poised for inspection. Engineers outfitted with bunny suits traverse the clean room, past machinery and test chambers. In the middle of the clean room is the spacecraft for NASA’s upcoming sunlight-measuring mission, TSIS-2 (Total and Spectral Solar Irradiance Sensor-2). This fall, the satellite took […]