Archives: Glossary Terms: 691 terms

Megahertz (10 Hz).

Obsolete terms for micrometer, µm (10 m).

Midnight Sun is when at least a part of the Sun's disk is visible above the horizon 24 hours of ...

A broad, faintly glowing band stretching across the night sky, composed of billions of stars in our galaxy too faint ...

A measure of atmospheric pressure equal to 1/1000 of a bar. Standard sea-level pressure on Earth is about 1013 millibars.

A term used since the 19th century to describe objects, such as asteroids, that are in orbit around the Sun ...

Multi-layer insulation.

Millimeter (10 m).

The Mars Observer spacecraft.

The process of modifying a radio frequency by shifting its phase, frequency, or amplitude to carry information.