744K views · 1.7K reactions | Humanity’s greatest explorers aren’t always human. Join us as we celebrate the achievements of the Mars Exploration Rovers Opportunity at the completion of a 15 year mission: https://go.nasa.gov/2SxMkjK | NASA Jet Propulsion Laboratory | Facebook

2.4K views · 51 reactions | Plenty to see in the night sky this October!  Discover how to view Venus, Saturn, Mars, Jupiter, and even the icy moon that NASA's Europa Clipper mission will explore. Plus, keep an eye out for what could be the brightest comet of the year. More NASA skywatching tips: go.nasa.gov/37ePy0B | NASA's Glenn Research Center | Facebook