The pH scale is a measure of how acidic or alkaline something is, 1 being highly acidic, 14 being highly alkaline, and 7 ...

After groundbreaking success with the Mercury and Gemini missions, NASA was rocked by the Apollo 1 disaster, in which three ...

Around seven asteroids or comets are thought to hit Saturn every year, but we have never spotted one in the act. Now, it ...

The Apollo spacecraft, designed by NASA for the iconic Apollo missions, played a pivotal role in one of humanity’s greatest ...

An Apollo capsule sits atop the Saturn V booster at NASA's Johnson Space Center. The escape tower is visible and the outside of the capsule is weathered.