Brian May warns of catastrophic threat to Earth from asteroids

428 views December 26, 2015 asteroidday 1

Queen guitarist and astrophysicist Brian May warns of the threat to Earth from a meteor strike. He’s among a group of experts calling for more effort to find and track potentially dangerous asteroids. ‘We are under threat from a meteor strike. This is a catastrophe that could be averted,’ he says to mark the first ever ‘asteroid day’

  • They both are useful in their own ways, and I’d be sprurised to see only one or the other being used. At the moment, we don’t have enough information about either to make a decision one way or the other. We’ve never landed on an asteroid, much less sent samples back. And although we’ve sent dozens of missions to the moon, we know very little about the subsurface. Mascons (mass concentrations), formed by giant asteroid impacts that melted surrounding rock into lava, might be troublesome for moon satellites, but could concentrate precious metals and spacecraft materials near the bottom, if we could reach it. Parking asteroids in moon orbit might be a good mid-term strategy, safer than in Earth orbit, with many of the benefits of the moon (signal speed, fuel cost, travel time, and ability to manufacture on the surface of the moon) as well as those of asteroids (microgravity, ease of access to minerals, ore quality).

    February 18, 2016 at 8:35 pm

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