The mission is expected to launch in 2023 and could kick off a series of launches that could help reveal whether Earth's "evil twin" once hosted— or still hosts— life.

iss065e083929 (June 1, 2021) --- This long exposure photograph, taken from the International Space Station as it orbited 262 miles above the Democratic Republic of Congo, reveals city lights on the African continent, Earth's atmospheric glow and star trails.

The aurora borealis, or northern lights, could easily be described as Earth's greatest light show. A phenomenon that's exclusive to the higher latitudes, has had scientists in awe and wonder for centuries. The theory of how the aurora is created has been speculated but never proven, until now.

Engineers are almost done building and testing the successor to the Hubble Space Telescope.