624K views · 14K reactions | Here's what gravitational waves are and why they matter. | Insider Tech | Facebook

324K views · 215 reactions | This pair of black holes have been in the midst of a gravitational tango for millions of years, and when they eventually collide, it'll have a unique and important impact on the time and space that surround them. | National Geographic TV | Facebook

2.4M views · 14K reactions | How scientists finally confirmed Einstein’s theory of gravitational waves. | The Verge | Facebook

8.5K views · 869 reactions | Up for an astronomy lesson?  Gravitational lensing is nature’s “magnifying glass,” and it allows us to see details from distant galaxies. But how does it work? Find out in this video ⬇️ | NASA's Hubble Space Telescope | Facebook