The upcoming Extremely Large Telescope (ELT) is very aptly named. When it’s completed in 2024, it will be the largest optical telescope in the world, with a mirror more than 120 feet across. That ...

What exactly are Dobsonian telescopes? We explain their design and why they have such widespread popularity among astronomers. When you purchase through links on our site, we may earn an affiliate ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. If you ever wondered how scientists clean giant telescopes on Earth, wonder no more. This video ...

This review, “The big easy,” appeared in the May 2005 issue of Astronomy magazine. Spring nights beckon observers. As amateur astronomers whose dreams usually outstrip our budgets, my little stargazer ...