CURRENT AFFAIRS

2020

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which university has detected two super Earths Gliese 887b and Gliese 887c orbiting around the Gliese 887, the brightest red dwarf star in the sky?
A
The University of Gottingen, Germany
B
University of Bern, Germany
C
Tsinghua University, Beijing
D
University of Helsinki, Germany
Explanation: 

Detailed explanation-1: -International researchers led by University of Göttingen find multiple planet system orbiting Gliese 887. The nearest exoplanets to us provide the best opportunities for detailed study, including searching for evidence of life outside the Solar System.

Detailed explanation-2: -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.

Detailed explanation-3: -The system is more than 1, 200 light-years away. This illustration shows an Earth-size exoplanet called TOI 700 e, discovered orbiting the small, cool M dwarf star TOI 700, which is located 100 light-years away. Its other Earth-size sibling, TOI 700 d, can be seen in the distance.

Detailed explanation-4: -These are lists of exoplanets. As of 1 February 2023, there are 5, 307 confirmed exoplanets in 3, 910 planetary systems, with 853 systems having more than one planet. Most of these were discovered by the Kepler space telescope.

Detailed explanation-5: -potentially harmful to nearby planetary life (more). Over 273 “M” main-sequence, red dwarf stars are currently believed to be located within 10 parsecs (pc) – or 32.6 light-years (ly) – of Sol.

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