Rocket Science - Nigel Talks Basics
Synopsis
To reach escape velocity, a rocket must travel at 40,000 kilometers per hour, significantly faster than the 28,000 kilometers per hour needed for orbit.
Synopsis
Nigel, an astronaut with Virgin Galactic, prepares for a suborbital flight from Spaceport in New Mexico. He explains the role of gravity in space travel and the need for rockets to overcome it. During the flight, the rocket ascends and then descends back to Earth after a brief experience in space. Nigel discusses the speeds required to reach orbit and escape velocity. He also describes how spacecraft slow down upon re-entry, using examples like the Apollo missions and the Space Shuttle.
Deep Dive
Why Watch
- See how gravity affects space travel.
- Find out what a suborbital hop involves.
- Meet Nigel, an astronaut with Virgin Galactic.
Did You Know
- To reach orbit, a spacecraft must travel at 28,000 kilometers per hour.
- Escape velocity from Earth is 40,000 kilometers per hour.
- A trip to the International Space Station can cost around $50 million.
Perfect For
Frequently Asked Questions
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.
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