A solar sail is no longer just a graceful idea for propellant-free flight; it is becoming a materials and deployment problem that engineers are finally learning how to solve. That shift matters ...

This remarkable miniature rotorcraft is so lightweight and efficient that it can lift its own mass given nothing but sunlight. The entire thing weighs about as much as four paperclips, and it can fly ...

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Earlier this week, Delta Air Lines announced an extra flight for ...

A Skydweller solar-powered drone just successfully completed a series of test flights with U.S. Navy funding. This time the longest flight was ‘just’ 22.5 hours, but in operation the aircraft will fly ...

In 2024, a rare total solar eclipse will pass over the U.S., Canada, and Mexico. Millions will have the chance to see the moon completely block out the sun, revealing our star's ghostly atmosphere. It ...

Have you ever imagined a drone that could fly indefinitely, powered only by the sun? It sounds like something out of a sci-fi movie, but it’s now a reality. By harnessing the power of renewable energy ...