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Rocket lands standing up – level 1

01-12-2015 15:00

Blue Origin is a company. It makes rockets. These...

Signal from space – level 3

01-07-2014 07:00

Astronomers have detected a mysterious signal 240 million light...

Man above a river – level 3

23-04-2014 07:00

A French tightrope walker has defied gravity by balancing...