Sagittarius A*, the black hole at the center of the galaxy, has a mass 4.3 million times greater than the sun. It comprises 99.9% of the mass at the center of the Milky Way. 📌 bit.ly/3JR7Poc 📷 @geminiobs @NOIRLabAstro/ NSF/AURA/J. da Silva #BlackHoleWeek pic.twitter.com/KriQYlAUNs

It's #BlackHoleWeek! What happens when two black holes merge? Gravitational waves may help solve this mystery and NSF @NANOGrav is on a mission to find the answer. Watch this video to learn more. www.youtube.com/watch?v=c2EKbvnee3o

#BlackHoleWeek Day 2! ⚫ 🌌 Did you know we can now measure the mass of a #BlackHole so far away that its light takes 11 billion years to reach us? 🤯 Here’s how it works 👇 www.eso.org/public/announcements/ann24002/

We have observed a diverse family of black holes using #GravitationalWaves We now now they come in a range of sizes, but what are the biggest and smallest black holes we have discovered? #BlackHoleWeek 1/🧵 📊: @NUCIERA pic.twitter.com/RlMdZ3w8gF