Is time travel possible? - Colin Stuart

What effect did traveling at high speeds in space have on astronaut Sergei Krikalev's experience of time?

• He aged faster than people on Earth.

• He experienced time passing slightly slower than people on Earth.

• His clock stopped working due to the speed.

• He traveled back in time.

What was the surprising discovery made by Albert Michelson and Edward Morley about the speed of light?

• Light travels faster when moving with Earth.

• Light travels slower when moving against Earth.

• The speed of light remains constant, regardless of Earth's motion.

• Light can only travel in a vacuum.

If two people observe a beam of light bouncing between two mirrors, and one person is moving very fast relative to the other, what must be true about their experience of time?

• Both observers will experience time passing at the same rate.

• The person moving faster will experience time passing slower.

• The person moving faster will experience time passing faster.

• The speed of light will appear different to each observer.

Why do GPS satellites need to account for time dilation?

• To prevent them from crashing into each other.

• To ensure accurate positioning data for devices on Earth.

• To allow astronauts to travel to the future.

• To help them communicate with other planets.