“What?” NASA astronaut Peggy Whitson exclaimed after her fellow Shane Kimbrough radioed her saying, “Peggy, I don’t have a shield.” It was Thursday, March 30, 2017, and Whitson was tethered to the ...

Add Yahoo as a preferred source to see more of our stories on Google. Our solar system is mostly arranged along one plane in space, as in this not-to-scale artist's diagram. NASA/JPL, CC BY If you’ve ...