NASA said Tuesday it may fly NASA astronauts, engineers, scientists, operators and trainers on suborbital vehicles owned by commercial companies.
NASA's Flight Opportunities program has...
A 50-year-old theory that began as speculation about how an alien civilization could use a black hole to generate energy has been experimentally verified...
Aspiring space tourists, pack your bags and get your checkbooks ready. Spaceship Perspective has announced the Spaceship Neptune, a balloon-borne capsule that will be...
To find food, dazzle mates, escape predators and navigate diverse terrain, birds rely on their excellent color vision.
“Humans are color-blind compared to birds and...
