A couple weeks ago, astronomers announced they had detected gravitational waves from a "kilonova" (I hate that name but we'll wait for another blog post to explain why).
A few weeks before that, the Nobel Prize was awarded for the work that went into LIGO, the gravitational wave observatory.
So gravitational waves — ripples in the fabric of space-time — are a big deal in the world of science. But how, exactly, do they work — and how, exactly, can you learn about them in under four minutes?
Adam Frank is a co-founder of the 13.7 blog, an astrophysics professor at the University of Rochester and author of the upcoming book Light of the Stars: Alien Worlds and the Fate of the Earth. His scientific studies are funded by the National Science Foundation, NASA and the Department of Education. You can keep up with more of what Adam is thinking on Facebook and Twitter: @adamfrank4