Refractor to reflector, Schmidt-Cassegrain to Maksutov-Cassegrain - this is everything you need to know about the different types of telescopes. When you purchase through links on our site, we may ...

Do you remember the first time you truly discovered the universe? When I was a teenager, many moons ago, I bought my first telescope, a Celestron 8. I remember excitedly unboxing it the day it arrived ...

This animation shows how an asteroid would appear during different phases depending on its location relative to the Sun, similar to how the Moon has phases. Approximately 4.6 billion years ago our ...

Discover the many types of objects you may find in the sand — and where they come from Warning: This graphic requires JavaScript. Please enable JavaScript for the ...