The smooth space flight, experts say, marks a big breakthrough for Chinese scientists.

专家们说这次顺利的太空飞行，标志着中国科学家们的巨大突破。

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Such expansion would stretch space and smooth matter, while leaving small density variations that show up in the CMB.

BBC: The observable Universe and beyond

The engine constantly throttles up and down, not only to counter the drag on the satellite from residual air molecules in near space but also to smooth the flight of the vehicle to minimise the noise in the gravity measurements.

BBC: Goce gravity mapper surfs atmosphere

Together, they developed Dr Ashtekar's idea to show that it implies that space and time are not smooth, as general relativity requires, but come in tiny, distinct chunks.

ECONOMIST: A new ��theory of everything�� is gaining ground