Experience the Power of Space Shuttle Launch Audio

At what point does the Space Shuttle Discovery switch to internal power?

• T-minus 60 seconds

• T-minus 30 seconds

• T-minus 90 seconds

• T-minus 10 seconds

What is the primary source of power for Discovery after the switch to internal power?

• Ground power

• Solar panels

• On-board fuel cells

• Battery backup

What is the significance of T-minus 17 seconds in the countdown?

• Main engine ignition

• Start of the final sequence

• Transfer to internal power

• Solid rocket booster separation

What happens immediately after the solid rocket booster separation?

• Main engine cutoff

• Guidance system activation

• Orbital insertion

• Payload deployment

What is the role of Discovery's onboard computers post-launch?

• Monitoring fuel levels

• Commanding the main engine nozzles to swivel

• Deploying the payload

• Communicating with ground control

What does 'negative return' signify in the context of the launch?

• The shuttle has completed its mission

• The shuttle is off course

• The shuttle cannot return to the launch site

• The shuttle has lost communication