VIDEO: NASA Astronauts Share Their Favorite Images of Earth From Space
Over the past 60 years, astronauts have shot more than 1.5 million…
From The Wide Space To The Deep Ocean
Kathryn D. Sullivan at 68 years old has become the first person…
NASA Figures Out Why Mysterious Rings Form on one of Earth’s Oldest and Deepest Lakes
For several decades, scientists and astronauts observing Lake Baikal have noticed giant…