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July 27, 2020
- Veteran Astronaut Rex Walheim Retires from NASA
- Mars Helicopter Team Is Ready to Fly
- Mars Helicopter Team
- A New Video Captures the Science of NASA’s Perseverance Mars Rover
- What Is a Spacewalk? (Grades 5-8)
- New NASA Research Projects Probe COVID-19 Impacts
- Investigaciones Destacadas de la Ciencia en la Estación Espacial: Semana del 20 de julio de 2020
- Vichada Valles
- NASA’s Aqua Satellite Finds Portugal Heating Up As Fire Blazes In Country’s Center