4.7K views · 97 reactions | Meet Mara Davi Gaines, a Broadway and television actress and zero-waste advocate who just learned about Citizen Science. | Nature | PBS | Facebook

2.6K views · 379 reactions | Scientists at NASA want to improve their ability to detect very dim comets--and YOU can help! Enter the NASA SOHO Comet Search Challenge and develop an artificial intelligence tool that can detect very faint “sungrazing comets.” Learn more and register: https://bit.ly/3quqI7e | NASA Space Alerts | Facebook

94K views · 5.6K reactions | Today NASA's Mars Exploration Rovers'...

289K views · 3.7K reactions | It's a blast (off) from the past! #OTD in 1983, NASA launched its sixth shuttle mission, STS-6. Watch as Challenger lifts off from the launch pad on its first flight to space! https://go.nasa.gov/427TdJG | NASA History | Facebook