Uploaded June 2012 | Updated September 2026, 2 weeks ago
VLBI, or Very Long Baseline Interferometry, is a technique that uses multiple radio telescopes to very precisely measure the Earth's orientation. It was originally invented back in the 1960s to take better pictures of quasars, but scientists soon found out that if you threw the process in reverse, you could actually learn a lot about the Earth! Learn more about VLBI in this video!
Credit: NASA
VLBI, or Very Long Baseline Interferometry, is a technique that uses multiple radio telescopes to very precisely measure the Earth's orientation. It was originally invented back in the 1960s to take better pictures of quasars, but scientists soon found out that if you threw the process in reverse, you could actually learn a lot about the Earth! Learn more about VLBI in this video!
Credit: NASA
