NASA will launch Transiting Exoplanet Survey Satellite


Orbit Observatory TESS (Transiting Exoplanet Survey Satellite), designed to search for exoplanets and study their atmosphere, will be launched on April 16. The device will allow scientists to find suitable for the extraterrestrial life of rocky planets, located in the habitable zone of the parent stars. This is reported by Science Alert.

As the Science Alert writes, the new space telescope NASA will observe 200 thousand bright stars, which are in relative proximity from the Sun. With the help of it, scientists plan to track astronomical transit (passage) - phenomena during which the planet or other large body obscures the star around which it rotates. Transit method allows to determine the size of the planet, its density and composition of the atmosphere.

TESS has a mirror with a diameter of 6.5 meters, which allows it to collect much more light than can catch the Hubble Space Telescope. Although terrestrial systems used for such studies are capable of studying large areas of the sky, the Earth's atmosphere severely limits the quality of the data they receive. So, they can fix the brightness drop by only one percent, while rocky planets reduce the glare level of stars by only a fraction of a percent.

Thus, TESS will be able to find exoplanets, sufficiently far from the parent stars, so that they can have liquid water and, accordingly, living organisms.
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