The NASA Exploration Site (NAS) site was promoted with many fanfare in April 2018, as the $ 200 million spacecraft took over the planet's hunting duties from its predecessor, the Kepler Cosmic Telescope.
Seven months after finding the first exoplanet, TESS discovered its first planet of the size of the Earth.
"It's so exciting that TESS, which started just a year ago, is already a game changer in the planet's hunting business," study coauthor Johanna Tesk of the Department of Terrestrial Magnetism (DTM) at the Carnegie Institute of Science said in a statement. "The spacecraft explores the sky and cooperates with the next TESS community to identify potentially interesting targets for additional observations using terrestrial telescopes and instruments."
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Unfortunately, the recently discovered Earth on Earth, known as the HD 21749c, does not seem to be a candidate for life. Orbiting the star approximately once every eight days, which probably makes it too hot to support life. This star, HD 21749, has approximately "80 percent of our Sun's mass and is about 53 light-years away from Earth," researchers add.
"Measurement of the exact mass and composition of such a small planet will be challenging, but it's important to compare the HD 21749 with the Earth," Wang said. "The Carnegie team PFS continues to collect data for this object with this goal."
Although HD 21749c does not seem to be a candidate for life, there is hope that TESS will find planets that can have conditions for life support, said lead author of the study, Diana Dragomir.
"For stars that are very close and very bright, we expected to find several planets of the size of the Earth," Dragomir said in a statement. "And here we are – this will be our first, and it is a milestone for TESS. It sets the path for finding smaller planets around even smaller stars, and these planets can potentially be suitable for living."
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The findings were published in the scientific journal The Letters of Astrophysical Journal Journal.
The study also mentions the "warm sub-Neptune World", known as HD 21749b, which lasts 36 days for orbital HD 21749 and was previously detected in January.
Tess revealed his first images in September, becoming a legend of a new generation that sought exoplanets, according to Kepler, who discovered more than 2,600 confirmed planets during his lifetime, according to Space.com.
Background to TESS
NASA's director of astrophysics Paul Hertz said that missions such as TESS will help answer whether we are alone – or just happy to have "the best superb real estate in the galaxy."
The number of extrasolar planets, from all observatories in space and the Earth over the past few decades, is more than 3,700 confirmed with 4,500 on the strong list of candidates.
About 50 are believed to be potentially suitable for living. They have the true size and true orbit of their star to support surface water and, at least theoretically, to support life.
Scientists speculate that a zone that is suitable for living or so called. Goldillox – the distance from a star where it is not too hot or too cold to support life, but only with the potential for liquid water on the surface – should be much closer to the red dwarfs than it is in our own solar system. The orbits of any planet in these systems should be quite short.
NASA and others point out that TES will not require atmospheric or other signs of life; it can not do that.
That important thing will be left to the James Webb Space Telescope, the next generation of the successor to the Hubble Space Telescope, which is based at at least 2020.
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Fox News, James Rogers and Associated Press, contributed to this report.