TMOD by Ensign February 20, 2021 0 (Obsolete. See IPN-ISD) JPL's Telecommunications and Mission Operations Directorate. Formerly MGSO.
Total Solar Eclipse by Ensign February 20, 2021 0 During a total eclipse of the Sun, the Moon covers the entire disk of the Sun. A total solar eclipse ...
Trans-Neptunian Object (TNO) by Ensign February 20, 2021 0 Any one of a number of celestial objects that orbit the Sun at a distance beyond the orbit of the ...
Transducer by Ensign February 20, 2021 0 Device for changing one kind of energy into another, typically from heat, position, or pressure into a varying electrical voltage ...
Transit by Ensign February 20, 2021 0 The passage of a celestial body across an observer's meridian; also the passage of a celestial body across the disk ...
Transparency by Ensign February 20, 2021 0 A measure of the atmosphere's clarity how dark the sky is at night and how blue it is during the ...
Transponder by Ensign February 20, 2021 0 Electronic device which combines a transmitter and a receiver.
TRC by Ensign February 20, 2021 0 NASA's Teacher Resource Centers. Obsolete, now called Educator Resource Centers, ERC.
