- Astrobotic’s lander didn’t marque it to the Moon due to the fact that of a failed valve Ars Technica
- We yet cognize wherefore Astrobotic's backstage Peregrine satellite lander failed Space.com
- Astrobotic study confirms Peregrine failed owed to propulsion valve Pittsburgh Post-Gazette
- Valve occupation blamed for Peregrine lunar lander failure SpaceNews
- One busted valve led to the nonaccomplishment of Astrobotic's $108M Peregrine lunar lander mission Yahoo! Voices