Glossary of Space Exploration Terminology

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Noctilucent Clouds
Noctilucent clouds
Weakly-luminous clouds, seen at night at heights of about 50 miles (80 km) above the Earth.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Rocketry & Space Technology

Glossary courtesy of Robert Braeunig's
Rocketry & Space Technology website.