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2019

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
TESS of NASA has discovered how many new planets in a new planetary system TOI 270?
A
3
B
2
C
5
D
7
Explanation: 

Detailed explanation-1: -This infographic illustrates key features of the TOI 270 system, located about 73 light-years away in the southern constellation Pictor. The three known planets were discovered by NASA’s Transiting Exoplanet Survey Satellite through periodic dips in starlight caused by each orbiting world.

Detailed explanation-2: -Over the course of its two-year primary mission, TESS’ four sensitive cameras systematically scanned over 200,000 of the nearest and brightest stars, imaging 75% of the sky. It found 2,100 planetary candidates and 66 confirmed exoplanets.

Detailed explanation-3: -Video: NASA Confirms 5,000 Exoplanets – and Counting – Exoplanet Exploration: Planets Beyond our Solar System.

Detailed explanation-4: -Astronomers discovered the latest planet in 2022, named HD 109833 b, it is a Neptune-like exoplanet that orbits around a G-type star. The astronomers found it using the transit method. In a recent discovery, astronomers find that two exoplanets may be mostly water.

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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