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

Houston, we have iconic space explorations.Soviet cosmonaut Yuri Gagarin became the first man in space on April 12, 1961, when he circled the Earth in Vostok I. The history-making voyage only ...

Newly released footage from the U.S. Coast Guard shows the moment the Titan submersible wreckage was found on the Atlantic Ocean floor. Published as part of an inquiry into the disaster, the video ...

Italian astronomer Giovanni Cassini (1625–1712) measured how long it took the planets Jupiter and Mars to rotate. He also discovered four moons of Saturn and the gap in the planet's rings.