Private spaceflight took one giant step forward this week when the Tycho Brahe craft lifted off atop the HEAT-1X rocket engine Friday (pictured) from a platform in the Baltic Sea.

当第谷·布拉赫号飞船周五越过热火- 1x号火箭发动机头顶，从波罗的海的一个平台上升空(如图)，私人太空飞行本周向前迈出了一大步。

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But although the road-mobile launcher has some off-road capability, it requires solid ground when launching to prevent damage from debris kicked up by the rocket engine.

然而，虽然道路机动发射装置有一定的越野能力，但在发射时也需要有坚实的地面，以防止火箭发动机激起的碎片造成破坏。

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If you have a smaller rocket engine and a lot of fuel, your rocket's probably not going to get off the ground.

如果你的火箭引擎太小，却有大量的燃料，你的火箭可能无法起飞。

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When the rocket at last blasted off on November 15th, the first-stage engine cut out prematurely, forcing the ground crew to destroy it for safety reasons.

ECONOMIST: The land of disappointments