- U.S. researchers call their idea a ‘directed energy orbital defence system’
- It could vaporise an asteroid as big as the one which flew past on Friday night in just an hour, they claim
- Researchers call for more ‘proactive’ work on asteroid defences, since ‘duck and cover is not an option’
Sun-powered lasers could protect Earth from any more asteroids judged to be flying too close, a new study claims.
U.S. researchers have outlined a plan for solar powered space defences which could vaporise an asteroid as big as the one which flew past Earth on Friday night in 60 minutes.
The same system could destroy asteroids 10 times larger in about a year, with evaporation starting at a distance as far away as the Sun, the researchers claim.