Risk is inherent in human spaceflight. However, specific risks can and should be understood, managed, and mitigated to reduce threats posed to astronauts....
Introduction
Since 1987, a highly modified McDonnell Douglas DC-8 aircraft has been a workhorse in NASA’s Airborne Science Program (ASP)—see Photo 1. The aircraft,...
The Discovery
A possible “super-Earth” orbits a relatively close, Sun-like star, and could be a habitable world – but one of extreme temperature swings,...
https://www.youtube.com/watch?v=GB06dUoGGRI
This was a magical revelation for the Greeks and the Egyptians, who were able to see from the motions of the stars and...
