Space telescope TESS finished the main scientific program, scanning about 75 percent of the celestial sphere. The telescope in two years was able to detect 2.1 thousand exoplanet candidates, of which 66 were confirmed, as well as to make a number of discoveries in the field of astrophysics, it is reported on the website NASA.
The main objective of the TESS Observatory is to search for exoplanets by the transit method, photometry near bright stars located at the distance of three hundred light-years from Earth. The telescope detects small, periodic changes in brightness of stars caused by planets passing in their drive. To track such events TESS has four telescopes with sixteen CCD matrix with a resolution of 16.8 megapixels. Each telescope has a field of view of 24 by 24 degrees, which gives a total field of view in the form of a long strip of the sky. Once in 27 days, the Observatory is changing the region of interest.
First the TESS sent in may 2018, but started to work only at the end of July, and in mid-September of 2019 became known about the first exoplanet to open them. In July 2019 TESS has completed a review of the southern hemisphere of the celestial sphere, received a huge amount of scientific data. By September last year, the telescope has found more than a thousand candidates in exoplanets and even opened three aksakaly, six sne Ia and recorded the outbreak of the destruction of a star by a black hole.
July 4, 2020 TESS has completed its main scientific program, scanning about 75 percent of the celestial sphere. On account of the Observatory 2.1 thousand discovered candidates in exoplanets and 66 confirmed exoplanets. Among the recent discoveries made by TESS, may be noted the flash of comet 46P/Virtanen, regularity in the pulsations of stars, and naturopathy exoplanet in the system close to the Sun stars AU Microscope and earth-like exoplanets TOI-700d, located in the habitable zone around the red dwarf.
Currently, TESS is working under the enhanced scientific programme, which runs until September 2022. The Observatory monitors the southern sky, determining the brightness of thousands of stars every twenty seconds, which will allow to study the flare activity of stars and their pulsations. TESS then switched to the study of the Northern hemisphere of the sky and areas close to the plane of the Ecliptic.
Currently, space is running another “hunter of exoplanets” — telescope CHEOPS intended for their detailed study. He already showed the researchers that the accuracy of the data is five times higher than in the case of ground-based observations.