A bit of mould is a pleiad of flowers;a nebula is an ant-hill of stars.

一粒霉菌是一簇美不胜收花朵，一撮星云是无数天体蚁聚。

As a coelostat, MA tracks the motion of celestial objects observed at their meridian passages.

MA作为定天镜跟踪天体，远镜在天体中天前后进行观测。

Bright ejecta rays such as these are produced as impacts excavate and eject relatively unweathered subsurface material.

这些放射状陨石坑产生于天体撞击溅出地下物质，绵延在遍布陨石坑星表面数百公里。

As described above, the collapse of a rotating cloud of gas and dust leads to the formation of an accretion disk through which matter is channeled onto a central protostar.

部分重力能量在崩溃过程中会以红外线形式损失掉，其馀则会用于增加天体核度。

If the incoming projectile were a white dwarf—a superdense star that packs the mass of the sun into a body a hundredth the size—the residents of Earth would be treated to quite a fireworks show.

如果接近天体是一颗白矮星（whitedwarfstar，一种超密恒星，质量约等同于太阳，但其体积却不到太阳百万分之一），那麽地球上居民将可以看到一场壮丽烟火秀。