NASA prepares to launch new satellites: search the universe, find a new world

[Boco Park-Science Popular Science] The National Aeronautics and Space Administration’s Outer Planetary Survey Satellite (TESS) is preparing for final preparations in Florida, looking for nearby stars around the launch on April 16. Undiscovered planets provide targets for future research to assess their viability. The biggest question to explore in extrasolar planets is: If an astronomer finds a planet in a livable area of ​​a planet, is it interesting from a biologist’s point of view? George Lake said that Tess Chief Researcher led the mission at the Kavli Institute of Astrophysics and Space at the Massachusetts Institute of Technology (MIT). It is expected that some planets, their atmospheric composition, will provide potential clues to the existence of life that can be accurately measured by future observers. On March 15, the spacecraft passed an inspection confirming that it was ready to launch. For the final launch preparation, the spacecraft will be fueled and packaged under the payload of the SpaceX Falcon 9 rocket.

NASA is ready to launch a new satellite: search The universe, looking for a new world

In front of a magma planet that orbits its main star, the transit outer planet measurement satellite (TESS) is shown. For further research and observation, TESS will identify thousands of possible new planets. Image copyright: NASA/GSFC

TESS will be launched at Cape Canaveral Air Force Base, Florida. With the help of gravity from the moon, the spacecraft will be placed on a 13.7-day orbit around the Earth. Within 60 days of launch, the satellite will begin its first two years of mission. Four wide-area cameras will give Tess a view, covering 85% of our entire sky. In this vast field of vision, the sky is divided into 26 parts, and Tess will observe one by one. The first year of observation will draw 13 plates containing the southern sky, and the next year will draw 13 plates of the northern sky. The spacecraft will look for a phenomenon known as “the transit”, in which a planet passes in front of its star, causing the star’s brightness to periodically fall. The National Aeronautics and Space Administration’s Kepler Space Telescope discovered more than 2,600 confirmed exoplanets in the same way, most of which were run by weak stars between 300 and 3000 light years away.

Paul Hertz, Director of the Astrophysics Division at NASA Headquarters, said: We learned from Kepler that there are more planets in the sky, and now TESS will open our eyes and see some The planets around our nearest stars, for those mysterious worlds, TESS will be bigger than ever, because NASA’s upcoming James Webb Space Telescope and other missions can detect the characteristics of these objects. TESS will focus on stars beyond 300 light years, 30 to 100 times higher than Kepler’s target brightness. The brightness of these target stars will allow researchers to use spectroscopy to study the absorption and emission of light to determine the mass, density, and composition of the planet. Water and other key molecules in our atmosphere can give us hints at the planet’s ability to survive.

Tessin Reinhardt, a Tess project scientist from the NASA Goddard Space Flight Center in Greenbelt, Maryland, said: TESS opens a new door to a new study that will enable Study a single planet and start discussing the differences between the planets. In the coming decades, the goals TESS will find will be the ideal target for research. This is the beginning of a new era of research on extrasolar planets. Through the TESS Customer Survey Program, the world’s scientific community will be able to participate in surveys outside of Tess’s core missions to enhance and maximize the scientific rewards of missions from the identification of extrasolar planets to stellar astrophysics and solar science. The most exciting part of any task is the unexpected result, the result that no one foresees.

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