As you get dressed this morning, here's a thought … https://t.co/8TeZU3vzSg — ESA (@esa) June 8, 2017

On certain dates in February, an elusive firefall can be spotted at sunset in Yosemite National Park, when the weather cooperates and the direction to the setting Sun is just […]

Congratulations to the #NewAstronauts – see you in space! https://t.co/57ZkY7ylvJ — ESA (@esa) June 7, 2017

Congratulations to @NASA's new class of astronauts announced today! #NewAstronauts https://t.co/uqHt2Lcz3O — Tim Peake (@astro_timpeake) June 7, 2017

LIVE NOW: Meet America’s #NewAstronauts! We’re at @NASA_Johnson in Houston introducing our 2017 astronaut class: https://t.co/XzOKgzDi7k pic.twitter.com/Hlv4wdYCZG — NASA Astronauts (@NASA_Astronauts) June 7, 2017