How to sidestep hurtling space junk

日期:2019-03-06 08:19:16 作者:冒艋玑 阅读:

By Ian Sample AT 50,000 kilometres per hour, even minuscule pieces of space junk can tear a satellite to pieces. But simplified software should help satellites dodge this orbital shrapnel. Right now, only the International Space Station and the space shuttle make a point of getting out of the way of junk, says Nick Johnson, an orbital debris expert at NASA in Houston. They plan their collision-avoidance manoeuvres via a detailed computer model—but the calculations are complex and take hours to run. But by stripping down the detailed model to a simple equation,