Space exploration and travel
When he became the first American to orbit the Earth, John Glenn gave the United States a boost in the space race, making him one of the most famous Americans alive.
In this episode of Inside Science Conversations Lindy Elkins-Tanton discusses NASA's Psyche mission and what got her into science.
The results could warrant further research into how enzymes function in space.
Scientists found that squirrels extract nitrogen from their urea to make proteins.
New research looks at how dust storms and a thin atmosphere may play into alternative energy sources on the Red Planet.
Iodine-based ion propulsion could power small satellites and help solve our space junk problem.
Scientists prepare to probe other planets by combining different ways to detect signs of life.
Five space travelers had elevated levels of proteins in the blood often seen in people with head trauma and neurodegenerative diseases.
New research suggests gamma rays stunt plant growth.
Cave microbes on Earth may help guide scientists toward life on Mars.
Sunscreen and calcium supplements aren't enough to protect Mars-bound space travelers from radiation and a lack of gravity in outer space.
This month in pictures