How do we know the atmosoheric composition, size, temperature, etc. of millions of other planets farther away from Earth?

August 25, 2021

When we look through a Kepler telescope. The size is determined by looking at the amount of light that passes through the front of a planetary star.It calculates the year by looking at the time differences that pass through itThen the atmospheres can be understood by looking at the spectrum of a planet as it…