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应能提供黯淡恒星次级样本位置资讯，从而侦最稀薄恒星流。

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

有企图心未者，或许会发射一能够脱离超级星器，做为侦宇宙膨胀参考点。