Astronomy for Beginners

Here’s where you’ll find observing guides, how-to articles and great astronomy hints and tips. Don’t forget to also check out our comprehensive astronomy dictionary.

Astronomy Dictionary
Catadioptric telescope

A telescope that contains both lenses and mirrors to focus light. Catadioptric telescopes include both Maksutov- and Schmidt-Cassegrain models.


Better known as astrobiology, it combines the study of geology, biology, chemistry and astronomy to study the possibility of life in space and the origins of life on Earth.

Heliacal rising

The date when a star first becomes visible in the dawn sky, rising just before the Sun.

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