On September 14, an asteroid will pass by Earth that's larger than some of the tallest buildings on the planet.
Didymos is not on course to hit Earth, and is not a threat to humanity. Instead NASA and the ESA are using this asteroid to practice diverting an asteroid from its path in case a different asteroid does start heading towards Earth in the future.
Insight is the first mission to study the deep interior of Mars.
It launched from Vandenberg Air Force Base on May 5 of this year.
Insight will study Mars in hopes of learning how celestial bodies with rocky surfaces, including Earth, formed.