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 Alignment on February 28, 2026: How to See Six Planets After Sunset
Six planets are above the horizon after sunset around Feb 28, 2026. Start 30–60 min after sunset; low western horizon. Four of the six planets will be visible to the naked eye!
What Is a Planet Parade? Planetary Alignment Explained
Planetary alignment (aka a “planet parade” or “planet line-up”) is when several planets appear in the same part of the sky along the ecliptic. Learn what it really means and see upcoming alignment dates for 2026.
What Is Retrograde Motion in Astronomy? Next Up – Mercury Retrograde 2026
Mercury retrograde in February is coming! Before blaming your problems on it, get the science. Learn what retrograde means in astronomy and check the next planetary retrograde dates.
Mercury & Venus Greatest Elongation 2026 Dates: What Is Elongation in Astronomy
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!
Lunar Eclipses Guide: What Does a Lunar Eclipse Look Like, and How Often Does It Happen?
What causes lunar eclipses? How often do they happen? When is the next one? Get answers to these and other questions from our article.
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.
Vernal Equinox 2026: When Is the First Day of Spring 2026?
When does spring begin in 2026? 🌸 Why aren’t day and night truly equal on the vernal equinox? And why doesn’t it always fall on the same date? 🌍 Find out here!
What Is an Equinox: Definition & Next Equinox Dates 2026
Get to know the equinox! Discover what makes this day special, why day and night are nearly equal at the equinox, and when the next one will occur.
Fall Equinox 2026: When Is the First Day of Fall 2026?
When does autumn start in 2026? Discover the fall equinox date and time for both hemispheres and how it marks the seasonal shift.
What Is Zodiacal Light – See False Dusk or False Dawn Around Equinoxes
Don’t miss a chance to see the mysterious zodiacal light stretching from the horizon after dusk or before dawn. Explore it now with our article!