Did you smile for the cameras? On Sept. 23, NASA - National Aeronautics and Space Administration's OSIRIS-APEX spacecraft made a quick flyby, passing 2,136 miles above Earth. Along the way, OSIRIS-APEX turned its cameras and instruments to look home. https://go.nasa.gov/4oXGWld | NASA Solar System Exploration

On Edwin Hubble's birthday, here's what we can learn about the immense scale of our universe from the Hubble Deep Field images: | TED-Ed