Four civilians on a daring SpaceX mission complete the first commercial spacewalk - CNN

1. Four civilians on a daring SpaceX mission complete the first commercial spacewalk  CNN
2. First Private Spacewalk in SpaceX Capsule Achieves New Milestone  The New York Times
3. Tech billionaire pulls off first private spacewalk high above Earth  Yahoo! Voices
4. Live updates: SpaceX Polaris Dawn crew attempts first commercial spacewalk  CNN