Rocket Science - Nigel Talks Basics (2015) - FAQ
Frequently asked questions about this film.
What is the speed required to reach orbit around the Earth?
To reach orbit around the Earth, a rocket must travel at a speed of 28,000 kilometers per hour, which is about 177,000 miles per hour.
What is escape velocity?
Escape velocity is the speed needed to break free from Earth's gravity, which is 40,000 kilometers per hour or 25,000 miles per hour.
How do astronauts slow down when returning to Earth?
Astronauts slow down when returning to Earth by using a blunt capsule that heats up due to friction in the atmosphere, allowing them to deploy parachutes for a safe landing.