Question

How does the planet hunting Kepler Telescope detect planets orbiting suns in other solar systems (these are known as exoplanets or extrasolar planets)? a. By measuring a change in brightness of a star as a planet passes in front of it b. By observing sunlight reflected off a planet c. By measuring the wobble a sun experiences due to the pull of the planet’s gravity d. By detecting gamma rays emitted by rocky planets

Answer 1

Given the options the correct one is option "a" - By measuring a change in brightness of a star as a planet passes in front of it.

Step-by-step explanation:

Kepler Telescope launched by NASA in 2009 uses sensors to monitor the brightness of more than 150,000 stars at the same time, in this way they can detect orbiting planets.