Kansas man noticed a strange black smoke ring in the sky and shared a now-viral video trying to figure out what it was.

Photo / Search and rescue Services Ltd A Waikato Westpac Rescue Helicopter crash was caused by a phenomenon called a ‘vortex ring state’, an investigation has found. The helicopter was trying ...

Photo/Supplied. The investigation has found that the helicopter almost certainly entered a hazardous aerodynamic condition called vortex ring state (VRS) — marking what may be the first time a ...

A European study into Vortex Ring State (VRS) - one of the helicopter industry's most pernicious and persistent safety risks ...

I might try adding fuel to vortex rings in a future video to test the idea. It was also a great first test for my new high-speed camera. Let me know what you think in the comments!

Space exploration missions have revealed that polar vortices aren’t uncommon beyond Earth. They’ve been observed throughout the solar system, on every planet and moon that has enough of an ...

A report on a helicopter crash in Waikato has vital information for manufacturers, pilots, operators and flight schools around the world, the Transport Accident Investigation Commission says. Nobody ...

Using NASA 's Hubble Space Telescope and other observatories, astronomers found the cosmic object in an unexpected place.