Astronomy Basics
Astronomy is the study of everything in the Universe beyond Earth's atmosphere. That includes objects we can see with our naked eyes, like the Moon, planets, and stars. It also includes objects we can only see with telescopes or binoculars, like distant galaxies and nebulae. But it doesn’t take much skill or equipment to get started with stargazing or amateur astronomy, and you can do it almost anywhere. Here you'll learn all the essential things about astronomy that will help you to pave the way into the world of stargazing.
Planetary Oppositions 2026: Next Up Is Neptune
The best time to view most planets is at the astronomical opposition. Find out what it means and when to see the upcoming oppositions.
Comets: All You Need to Know
All-round guide about comets: definition, special features, and a couple of tips for aspiring observers.
What Is Retrograde Motion? Which Planets Are Retrograde Right Now (July 2026)
Learn what retrograde means, see which planets are retrograde right now, and get an easy way to observe retrograde loops.
What Is a Comet? All About The Cosmic “Dirty Snowballs”
Hairy stars, dirty snowballs, cosmic time capsules – that’s all about comets. Let’s dive into the science and history of comets, uncovering their role in the universe and their impact on us.
Retrograde Motion in Pictures: The Truth About Retrograde Planets
Retrograde motion explained simply: see why Mercury and other planets appear to move backward and how to track this motion in your sky.
Planetary Alignment 2026: Planet Parade Dates & Meaning
See when the next planetary alignment happens in 2026, which planets will align, and get the full 2026–2027 planet parade dates.
What Is a Solstice? Meaning, Dates & How It Works
The next solstice is on 21 June 2026. Discover solstice dates, meaning, longest and shortest day facts, and the difference between solstices and equinoxes.
Mercury & Venus Greatest Elongations in 2026: Best Morning and Evening Views
What is elongation, and what does it have to do with the planets’ visibility in the sky? Get familiar with the concept of elongation and learn how to choose the perfect time to observe the planets!
What Is Earth’s Real Shape? 7 Ways to Prove Earth Is Round
How can you prove Earth is round? Check 7 simple observations that reveal Earth’s shape, from lunar eclipses and time zones to ships disappearing beyond the horizon.
Summer Solstice 2026: First Day of Summer & Longest Day
The summer solstice is June 21, 2026, in the Northern Hemisphere. See the exact summer solstice time, why it is the longest day, and how to celebrate it.