NEED FOR SPEED

Popular Science - - CHARTED -

One rea­son these fly­ing ob­jects are so dan­ger­ous is their ve­loc­ity. A zip­pier as­ter­oid can do more dam­age. And these things are fast— up­wards of 44,000 miles per hour. All other fac­tors (size, an­gle of en­try, tar­get) be­ing equal, a faster as­ter­oid can dig a big­ger crater, and melt the rock it’s slam­ming into.

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