The second Mercury mission was going according to plan until the Liberty Bell 7 capsule sank in the ocean. NASA exonerated astronaut Gus Grissom, and two researchers now say they know what happened.

This device, made by the Barnes Instrument Company, was used to assist a Mercury astronaut in locating the Earth's horizon, relative to the attitude of a Mercury capsule. An accurate determination of ...

500 years Encased in the monument's concrete base is a time capsule containing technical reports, photos, recordings and other memorabilia related to Project Mercury. The sealed metal box is not ...

An early American spacecraft that survived two launches has touched down at a museum in Long Island, New York. Mercury-Redstone 1A (MR-1A) is now on display at the Cradle of Aviation.