All Subjects
      All Types

        Info

        Grades

        9-12

        Permitted Use

        Stream Only


        Part of Crash Course
        8 Favorites
        214 Views

        Exoplanets | Crash Course Astronomy

        There are other planets out there, and astronomers have a lot of methods for detecting them. Nearly 2000 planets have been found so far. The most successful method for finding them is using transits, where a planet physically passes in front of its parent star, producing a measurable dip in the star's light. Exoplanets appear to orbit nearly every kind of star, and we've even found planets that are the same size as Earth. Astronomers think there may be many billions of Earth-like planets in our galaxy.

        Engage with the Crash Course community and subscribe to new videos on YouTube.

        Contributor:

        You must be logged in to use this feature

        Need an account?
        Register Now