Frequently Asked Questions

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What is a solar sail?

What pushes a solar sail if space is empty?

How does sunlight push on anything if it has no mass?

Does the solar wind push on a solar sail?

How hard does sunlight push?

If sunlight is so weak, how can a sail go anywhere?

How fast can a solar sail go?

Will meteoroids or space junk destroy the sail?

Can you sail towards the sun even though sunlight pushes outward?