侦测

Working on a comparable timescale, SIM should provide positional information for a subsample of faint stars, thereby probing the most tenuous star streams.

在此同时，SIM应能提供黯淡星次级样本位置资讯，从而侦测最稀星流。

Ambitious future observers might also send out probes that escape the supergalaxy and could serve as reference points for detecting a possible cosmic expansion.

有企图心未来观测者，或许会发射一能够脱离超级星系探测器，做为侦测宇宙参考点。