TESS was supposed to take off on Monday, but the launch teams said they wanted more time for guidance, navigation and control analysis.
The stars being studied by TESS are between 30 to 100 times brighter than those surveyed by the Kepler and K2 missions and TESS will cover a sky area 400 times larger than that monitored by Kepler.
"We are thrilled TESS is on its way to help us discover worlds we have yet to imagine, worlds that could possibly be habitable, or harbor life", said Thomas Zurbuchen, associate administrator of NASA's Science Mission Directorate in Washington.
According to NASA, TESS' focus on nearer targets means that TESS planets should be much easier to learn more about, especially since more powerful telescopes, like the hopefully-soon-to-be-launched James Webb Space Telescope, will soon come online.
SpaceX to build its massive BFR in Los Angeles
SPACECRAFT: At 5 feet (1.5 meters), Tess is shorter than most adults and downright puny compared with most other spacecraft. The launch costs for the TESS satellite amount to $87 million, NASA officials have revealed prior to the launch.
Boiling atmospheres, roiling winds, dead shells of entities once vibrant - scientists have discovered some pretty wonderful exoplanets in the past few years.
"It packs a big punch, and that's the part that we're really excited about", Ricker said.
This photo released by SpaceX on Wednesday, April 18, 2018 shows a Falcon 9 rocket carrying NASA's Transiting Exoplanet Survey Satellite at Cape Canaveral Air Force Station in Fla.
SpaceX planned to attempt recovery of the booster's first stage with a rocket-powered descent to touchdown on an offshore droneship, the "Of Course I Still Love You".
TESS will be deployed into an elliptical orbit about 48 minutes after launch. TESS is expected to identify thousands of potential new planets for further study and observation. Kepler, on the other hand, is studying stars 300 to 3,000 light years away.
A planet should cause a slight, brief dip in its star's brightness as it passes right in front. Scientists at NASA's Jet Propulsion Laboratory have also used AI software to automate operations of the Earth Observing-1 satellite, allowing it to react to events such as recent volcanic eruptions by immediately taking pictures of the event, long before scientists on the ground even knew what happened.