ArcaMax

Knowledge

on Feb 22, 2026

Robert Crippen
Ron McNairy
John Young
Thomas Mattingly

John Young. John Watts Young walked on the moon on April 21, 22 and 23 1972 during the Apollo 16 mission.

Science Trivia / February 21, 2026

3,666,000,000 Miles. Pluto is the second most massive dwarf planet in the solar system.

Science Trivia / February 21, 2026

Dead Zone. A low-oxygen area of the sea is called "hypoxic".

Science Trivia / February 20, 2026

Pluto. While technically no longer a planet, Pluto is still the 10th largest body orbiting the sun.

Science Trivia / February 20, 2026

Environmental Protection. Pollution in China has made cancer a leading cause of death in 30 cities and 78 counties.

Science Trivia / February 19, 2026

Conching. The length of the conching process determines the smoothness and quality of the chocolate.

Science Trivia / February 19, 2026

Arctic. Glaciers move slowly because of their mass and weight.