How will it find these planets? Like the Kepler mission before it, TESS will use the transit method – that is, it will stare intently at the stars in a given section of the sky, watching for the telltale flicker of a passing (transiting) planet.
Kepler, which launched in 2009, focused on one portion of the sky and sought to find Earth-like planets. TESS, on the other hand, will look for stars 30 to 100 times brighter than those observed by Kepler. It also will scan a far larger area.
PS: If you want to game around with your self-build space crafts check out: https://kerbalspaceprogram.com
you may also like Scott Manley’s very well done Youtube Channel