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Xerus is a proposed two person reusable sub orbital being poposed by XCOR Aerospace. Its dsegin is unique compared with other proposed sub orbital spacecraft as it takes off and lands like a normal aeroplane.
It would climb to 100km high where a small period of weightlessness is felt before it re enters the atmosphere. It features a re usable rocket and although it is being developed mostly for space tourism it could also be used to deliver small satellites