CURRENT AFFAIRS

2019

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Name the super earth located about 31 light-years away, which was discovered by NASA’s Translating Exoplanets Survey Satellite (TESS).
A
TOI 216 b
B
HD 219666 b
C
GJ 357 d
D
HD 1397 b
Explanation: 

Detailed explanation-1: -The alien world, named GJ 357 d, is a super-Earth located about 31 light-years away. The search for life beyond our planet has just taken a massive leap, asNASA has discovered the ‘first nearby super-Earth. ‘ NASA’S alien-finder satellite has discovered a super-Earth 73 light years away.

Detailed explanation-2: -Astronomers have discovered an Earth-mass planet very close to us. Known as Wolf 1069 b, the planet orbits a red dwarf star called Wolf 1069, which is about the fifth the size of our Sun. It’s only 31.2 light-years distant in the constellation of Cygnus.

Detailed explanation-3: -Scientists have discovered two ‘super Earth’ type planets about 100 light-years from our Earth where 1 year is 8.5 days. Two planets discovered by a team of international scientists have been observed to be orbiting a small, cool star called TOI-4306 or SPECULOOS-2.

Detailed explanation-4: -Kepler-452b has a probable mass five times that of Earth, and its surface gravity is nearly twice as much as Earth’s, though calculations of mass for exoplanets are only rough estimates. If it is a terrestrial planet, it is most likely a super-Earth with many active volcanoes due to its higher mass and density.

Detailed explanation-5: -In 2020, Gilbert and others announced the discovery of the Earth-size, habitable-zone planet d, which is on a 37-day orbit, along with two other worlds. The innermost planet, TOI 700 b, is about 90% Earth’s size and orbits the star every 10 days.

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