37K views · 405 reactions | A giant meteor, freezing over, or over-heating.... However this planet goes, we're going to need a Plan B if we want to survive. Watch 'How the Universe Works' Tuesdays at 10pm ET on Science Channel or anytime on SCI GO: https://bit.ly/2VugeCC | Science Channel | Facebook

Should we use nuclear weapons to destroy incoming asteroids? Y/N. | Science Channel

If you think interstellar space is quiet and dark, think again. It's teeming with planetary objects and activity. Some things even passing through our neighborhood. Let's find out all the things that are traveling through interstellar space in an all-new HOW THE UNIVERSE WORKS at 10p EST! | Science Channel