Laser propulsion: NASA's laser-powered spacecraft will fly to Mars in 72 hours

The video discusses laser-based propulsion, where photons from a laser beam reflect off an object, converting energy into momentum to move spacecraft. This technology allows for lightweight spacecraft without fuel, capable of reaching 30% of light speed. It could enable a robotic mission to Mars in three days and a manned mission in a month.

What forms the basis of laser-based propulsion?

• Electricity

• Magnetism

• Momentum

• Gravity

How do photons from a laser beam affect an object?

• They illuminate the object

• They push the object

• They create a magnetic field

• They heat the object

What is included in a spacecraft launched with laser-based propulsion technology?

• A nuclear reactor

• A robotic probe and a reflective sail

• A large fuel tank

• A solar panel array

What speed can a spacecraft achieve using laser-based propulsion?

• 40% the speed of light

• 10% the speed of light

• 20% the speed of light

• 30% the speed of light

How long could it take for a robotic spacecraft to reach Mars using this technology?

• One week

• Six months

• Three days

• Two months