Planets & Moons

There are 8 officially recognized Solar System planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Most of them, except Mercury and Venus, have their own natural satellites, commonly called “moons.” Some of the dwarf planets, like Pluto and Eris, have moons, too. Here, you’ll learn the best dates to observe planets in the sky and find everything you need to know about planets, dwarf planets, and natural satellites. When you learn enough, test your astronomy skills with our challenging quizzes!

Planets near the Moon

Bright “Star” Next to Moon: What Planet Is Near the Moon Tonight?

~7 min
Astronomical News

What is that bright dot shining near the Moon tonight? Find out about stars and planets that can be seen next to our natural satellite this month!

Jupiter guide

Fun Facts About Jupiter: The Biggest Planet in the Solar System

~11 min
Astronomical News

Bright Jupiter is known for its enormous size, many moons, and mysterious Great Red Spot. Read our article to uncover all the secrets of the giant planet.

Facts About Mercury

All About Mercury, The Smallest Planet In The Solar System

~8 min
Astronomical News

Explore the closest planet to the Sun! Find out how long a day on Mercury is and how many moons the planet has. Also, keep up with the upcoming Mercury events!

Facts About Saturn

Planet Saturn: How to Find Saturn in the Sky in 2025?

~13 min
Astronomical News

How many rings does Saturn have? Where is Saturn tonight in the sky? Find answers to these and other most common questions about Saturn in our article.

Astronomical Calendar 2025

Calendar of All Astronomical Events 2025

~36 min
Astronomical News

Ready to spend 2025 staring at the sky instead of your phone? We've got all the astronomical events of the year in one place. Check out the dates and times for conjunctions, meteor showers, eclipses, supermoons, equinoxes, solstices, and more.

Retrograde motion of planets

Retrograde motion explained: what is retrograde motion in astronomy

~4 min
Astronomical News

Discover the science of retrograde planets! Understand the mechanics of retrograde motion, its causes, and its significance in the study of astronomy and planetary behavior.

Venus, the brightest planet

Venus Facts: Explore the Brightest Planet in The Sky

~14 min
Astronomical News

In July 2025, Venus is perfectly placed for observing and photography! Get to know the planet and learn about upcoming Venus events in this article.

How to see planets

How to See the Planets Tonight: Tips For Beginners (No Telescope Needed)

~10 min
Astronomical News

Learn exactly where and when to spot Venus, Jupiter, Saturn & more tonight with our step-by-step guide. No equipment required — perfect for city-dwellers and beginners!

Pluto

All About Pluto: Explore The Peculiar Dwarf Planet

~12 min
Astronomical News

How far is Pluto from the Earth? Why isn’t Pluto a planet? Read this article to get answers to these and many other questions!

Planetary Alignment in space

Planetary Alignments Explained: Don’t Miss the 6-Planet Parade on August 10, 2025

~11 min
Astronomical News

The Large Planetary Alignment is coming! 6 planets will be visible in the mornings around August 10 — the Full Moon will complete the picture. Find out how to see the planets lining up in the sky.