In 1988, a group of scientists investigated their lab after several unusual incidents and found a sub-perceptual explanation. A new experiment added evidence that sounds we cannot hear may be to blame ...
The Polaris Dawn crew Jared Isaacman, Scott "Kidd" Poteet, Sarah Gillis and Anna Menon explain the experiments conducted during the mission. Also, see a time-lapse of Isaacman's spacewalk. Credit: ...