Astronomy for Beginners

New to astronomy? Not sure how to get started in stargazing or which telescope to buy?

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

Astronomy Dictionary
Perihelion

The point in the orbit of an object that takes it closest to the Sun.

Nucleosynthesis

The binding of atoms to produce heavier elements. It takes place in stars (see nuclear fusion) and occurred in the first three minutes and 45 seconds after the Big Bang when it’s referred to as Big Bang nucleosynthesis.

Main sequence star

A main sequence star is one that is in a stable part of its life converting hydrogen and helium through nuclear fusion. Most stars we see in the night sky are in the main sequence stage and our Sun is currently also a main sequence star.

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