Just the same press release in 'New Scientist'...
Um, I'd still want a heat-shield warrantied for one (1) ballistic entry, just in case, just in case...
FWIW, you could probably charge up the toroid while in orbit using a conductive tether, and get 'free' retro-braking into the bargain...
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OT: Didn't the PhysOrg article spawn some daft comments !!