Astronomy Glossary

Galaxies

A galaxy is a gravitationally bound system of stars, gas, dust, and dark matter, ranging from dwarfs with millions of stars to giants with trillions.

Galaxies

Galaxy clusters are the largest gravitationally bound structures in the Universe, containing hundreds to thousands of galaxies plus hot intracluster g...

Stellar Objects

Globular clusters are ancient, spherical concentrations of 100,000-1 million stars, tightly gravitationally bound and orbiting in galactic halos.

Telescopes Equipment

Go-To mounts use computerized motors and databases to automatically locate and track celestial objects, dramatically simplifying observing sessions.

Telescopes Equipment

A guide scope is a small telescope piggybacked on the main imaging telescope, paired with a camera to provide real-time tracking corrections during lo...