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Driven by demand in consumer high-speed telecommunications systems as well as defense-related projects, the cost of critical technologies for a gigantic laser array are now decreasing by approximately a factor of 2 every 18 months, Lubin says.Those exponential rates of change suggest that in 10 years a giant laser array’s per-watt cost would drop from to 10 cents.

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“55 years ago today, Yuri Gagarin became the first human in space.

Serious planning for the project began about a year ago, when Milner consulted experts to consider options for practical interstellar travel.

One was Avi Loeb, an astrophysicist at Harvard University and new chairman of Breakthrough Starshot’s advisory board who has a reputation for performing groundbreaking work on unconventional research topics.

“Things like antimatter or fusion rockets are all on the ‘real’ axis.

The known laws of physics tell us they are realistic solutions, even if we don’t know how to realize them.