“Yesterday, an article released on NASA’s website reported a 500 meter-wide asteroid passed within 745,000 miles of Earth. As far as we know, another rock of this size won’t pass that closely again until 2027. But we don’t know that for sure.”

Vox takes a look at how former Astronaut Dr. Ed Lu, is trying to save the world from asteroids.

Read the Article: “Why one former astronaut is trying to save the world from asteroids”

VOX (Jan. 27, 2015)

Watch the Videos: “Asteroids in our Solar System” and “B612 Sentinel Space Telescope“