Have you seen a UFO? In Florida, you're not alone. What to know about sightings
The earliest known UFO sighting in Florida, according to the National UFO Reporting Center, was July 15, 1944, near Tampa. A black cylindrical object appeared over P-38s in the area and was visible ...
Interesting Engineering18h
Ultra-thin lightsails with billions of tiny holes to enable high-speed space travel
Researchers have developed scalable lightsails, ultra-thin, reflective structures that use laser-driven radiation pressure to ...