Europe launches laser satellite to space

The video tutorial explains the European Data Relay System (EDRS), focusing on the EDRS C satellite joining its sister satellite, EDRS A, in a geostationary orbit. The EDRS uses lasers to collect data from lower orbit satellites called Sentinels, which monitor Earth's surface. The EDRS can relay data back to Earth at high speeds, significantly reducing the delay in data transmission, allowing near real-time data relay.

What is the data relay rate of the EDRS satellites?

How does the addition of EDRS 3 improve data transmission?