Astronomy on MSN18 天
Five ‘shy,' lesser-known deep-sky gems to observe
Many constellations are well-known for having one very special deep-sky object within their borders, something so famous that ...
来自MSN3 天
The Shy Five: Lesser known deep-sky objects worth seeking out
Many constellations have one very special deep sky object within their borders ... M71 is a loose globular cluster, meaning its stars are less densely packed than those in more well-known globulars.