Ground-based in situ observations will be enhanced from ground stations as well as from sounding rockets and balloons.

进一步开展从地面站、探空火箭和气球探测取得更多的地基现场观测数据的工作。

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Passengers will ride the rocket plane for the fun of it, but scientists would use it for the same reasons they also fly experiments on the International Space Station (ISS) or on sounding rockets - to access microgravity conditions.

BBC: Virgin spaceship aims to be science lab