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NASA’s transiting exoplanet survey satellite (TESS) has discovered a planet named _____ orbiting around the star HD 21749, which lies about 53 light years from earth in the faint constellation reticulum?
  • a)
    HD21749b
  • b)
    FB14566c
  • c)
    XC56788y
  • d)
    RX98989e
  • e)
    None of these
Correct answer is option 'A'. Can you explain this answer?
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NASA’s transiting exoplanet survey satellite (TESS) has discover...
On 7th January 2019, NASA’s transiting exoplanet survey satellite (TESS) has discovered a planet named HD21749b orbiting around the star HD 21749, which lies about 53 light years from earth in the faint constellation reticulum. TESS does this work by carving the sky up into overlapping sectors, studying each one for 27 days at a time. Discovery team leader Diana Drogomir, institute of astrophysics and space research said that the planet has a density of water, a thick atmosphere and has an average surface temperature around 300 degrees Fahrenheit. HD 21749b completes one orbit of its host star, which is nearly as bright as our sun, every 36 earth days. It is a “sub Neptune”, around three times bigger than earth and 23 times more massive then earth, which means it’s likely gaseous rather than rocky.
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NASA’s transiting exoplanet survey satellite (TESS) has discovered a planet named _____ orbiting around the star HD 21749, which lies about 53 light years from earth in the faint constellation reticulum?a)HD21749bb)FB14566cc)XC56788yd)RX98989ee)None of theseCorrect answer is option 'A'. Can you explain this answer?
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