NASA TESS shares first science photograph

Rodiano Bonacci
Settembre 20, 2018

TESS's scientific mission is largely the same as Kepler's - to take images of exoplanets.

Inside the image rests a strip of stars and galaxies from which we mention the Small and Large Magellanic Clouds, which are two dwarf galaxies that orbit our own, and the Beta Gruis and R Doradus, a couple of luminous stars which saturated the detectors of the cameras.

Its four wide-field cameras will view the sky in 26 segments, each of which it will observe one by one.

Part of the data TESS has finally been able to send to its team on the ground includes a very detailed photo of the southern sky, which was taken using all four of the satellite's wide-field cameras.

The probe's exemplary inaugural science image is the first look at TESS's unique approach to planet hunting.

TESS acquired the image using all four cameras during a 30-minute period on Tuesday, Aug. 7. The mosaic shows parts of a dozen constellations in the southern hemisphere, from Capricornus to Pictor.

Camera BAGS, designed and manufactured by the Lincoln laboratory of the Massachusetts Institute of technology Lexington, Massachusetts and the MIT Kavli Institute, control large swaths of the sky to look for so-called transits, that there are traces of the passage of the planet on background stars. Over the next three years, TESS will continue to scan the night sky, sector by sector. Paul Hertz, director of NASA's astrophysics division, said in a statement. Transits occur when a planet passes in front of its star as viewed from the satellite's perspective, causing a regular dip in the star's brightness. Each hemisphere contains 13 sectors and, for now, TESS will focus on the Southern Hemisphere.

TESS might spend a year in the southern hemisphere and then work its way to the northern hemisphere, collecting data about new planets. TESS's target stars are 30 to 300 light-years away and about 30 to 100 times brighter than Kepler's targets, which are 300 to 3,000 light-years away.

NASA just released the first science image captured by Tess, though it was actually taken in early August. The brightness of TESS's targets make them ideal candidates for follow-up study with spectroscopy, the study of how matter and light interact. Come what might possibly, scientists will be ready to burn up TESS's discoveries with flooring-based mostly observatories and the long-delayed James Webb Space Telescope to expose us extra regarding the composition of these a ways away planets. "And of course, lots of exciting exoplanet and star proposals as well".

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