Breakthroughs, discoveries, and DIY tips sent every weekday. A US astronaut aboard the International Space Station (ISS) recently caught a glimpse of one of Earth's least understood atmospheric phenomena. While orbiting in the early hours of July 3, Nichole "Vapor" Ayers snapped a photo of a transient luminous event, as she passed over North America. Better known as a sprite, these atmospheric events are common after a lightning strike. Wow," Ayers posted to social media later that day along with the stunning picture.

Today on In Case You Missed It: We get a much closer look at electrical discharge phenomena courtesy of a video filmed from the International Space Station. Called "Transient Luminous Events", the phenomena are notoriously hard to study as they occur 25-60 miles above thunderstorms. Even satellites have had little luck at capturing images of the upper-atmosphere lighting. However, viewing angles were less of a challenge for ESA astronaut Andreas Mogensen who was able to a highly-sensitive camera to snag video footage of 245 flashes of blue lightning while he was stationed on the ISS in 2015. Meanwhile, Agility Robotics introduced us to Cassie, a bipedal robot that can walk smoothly over pavement, grass and lose soil without issue. The three-month old bot walks much the same way as humans do, which makes it more adept at handling various types of terrain, and has a similar three-planed hip joint movement which makes it more steerable than earlier bipedal models.