Normal matter—the kind that makes up our home planet and everything we can see—adds up to just five percent of the known universe. The other 95 percent is dark matter and dark energy, a tag team that ranks among the biggest mysteries in all of science. NASA astrophysicists Jason Rhodes and Ami Choi explain how we study this dark side and why it’s making scientists reconsider what we think we know about the universe.

NASA's Curious Universe: Welcome To The Dark Side

Hello, we’re NASA. You may have seen our astronauts, rocket launches, or Mars rovers — but have you heard our sounds? From interviews with astronauts and engineers to stories that take you on a tour of the galaxy, NASA’s audio offerings let you experience the thrill of space exploration without ever leaving Earth.

My name is Sarayut  Pudwatt
My old 53 years
I work At Home for NASA and NOAA/ Lab: Sirithorn​ And I am very proud. Even though this pride makes me lonely and...❤️☕🇺🇲🇹🇭
