BETA
Chapter 1
Becoming a NASA astronaut
Chapter 2
The vehicles that reach orbit
Chapter 3
The countdown and launch day
Chapter 4
Living in space and returning home
YOUR GOAL
Master of How NASA sends astronauts to space
Ch 3 · The countdown and launch day
artiteacher NASA Launch Countdown Day
From Kennedy Space Center ground, oh-oh! / SLS rocket makes a mighty sound!
artiteacher A highly coordinated team of engineers controls the final countdown from NASA's Kennedy Space Center.
artiteacher Spacesuits worn during launch are highly complex personal spacecraft designed to protect against sudden depressurization.
Fun Fact
Launch day breakfast: The tradition of eating steak and eggs before a launch is actually to prevent mid-flight bathroom emergencies.
Glossary
countdown (noun)
An act of counting backward to zero, especially to initiate a rocket launch. At Kennedy Space Center, NASA initiated this sequence on March 30, 2026, for Artemis II.
An act of counting backward to zero, especially to initiate a rocket launch. At Kennedy Space Center, NASA initiated this sequence on March 30, 2026, for Artemis II.
Quiz
How long does it take for a modern NASA rocket to reach orbit after lifting off from the launch pad?
Quiz
Why do NASA launch spacesuits have liquid cooling garments worn underneath them?
Quiz
What speed must a spacecraft reach to achieve low Earth orbit around the planet?
Quiz
From which NASA facility in Florida do all crewed flights from US soil currently launch?
Quiz
What traditional high-protein breakfast has been eaten by NASA astronauts on launch day since 1961?
Quiz
How many times the force of Earth's gravity do astronauts typically experience during a rocket launch ascent?
Quiz
Why do NASA astronauts wear bright orange suits during launch and reentry instead of white suits?
Quiz
What is the name of the control room at Kennedy Space Center where the final countdown is managed?