Space travel: Stephen Hawking and billionaire's plan for laser-propelled nanocraft fleet

The video discusses a futuristic concept of sending nanocrafts to Alpha Centauri using a star chip equipped with a light sail. These nanocrafts would be propelled by a powerful laser array located in the Atacama Desert. The goal is to achieve 20% of the speed of light, allowing the nanocrafts to reach Alpha Centauri in decades, a journey that would take current spacecraft thousands of years.

What is the purpose of the 'star chip' mentioned in the text?

How does the light sail contribute to the propulsion of the nanocraft?

What is the significance of the laser array's location in the Atacama Desert?

What speed can a nanocraft potentially achieve using laser light propulsion?

Compare the travel time of a nanocraft to Alpha Centauri with that of a current spacecraft.