which could better be described as a claw rather than a hand, is 1.5 light-years across, NOIRLab said. Its tail, or arm, stretches another 8 light years – making CG 4 a comparatively small Bok ...

For seeing-dominated sky surveys, in terms of grasp, étendue, or collecting-area optimization, recent technological advancements make it more cost effective to construct multiple small telescopes ...