Galaxy Chronicle

Supermoon: What It Really Is, Why It Happens, and When to Catch the Next One

A supermoon is a full moon that lines up with the Moon's closest approach to Earth, making it look a little bigger and noticeably brighter than an ordinary full moon. At its best, a supermoon can appear up to 14% larger and about 30%...

What Is a Constellation? A Beginner’s Guide to the Sky’s 88 Star Patterns

A constellation is a group of stars that forms a recognizable pattern in the night sky, one we've given a name, usually after a mythological figure, animal, or object. There are 88 of them officially recognized, and together they map out the entire sky....
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Observe the Sky’s Colorful Stars: A Beginner’s Stargazing Guide

Most people's mental image of the night sky is pretty simple, a scattering of...

Astronomy 101: Exploring the Planets of the Solar System

Theres a reason almost every astronomy class, every science museum, and every kid's first...

What Is a Galaxy? Learn About Stars Planets and More

Imagine standing in your backyard on a clear, moonless night. You look up and...

How Long Is a Year on Saturn? The Ringed Planet’s Orbit Explained

Have you ever wondered what your birthday would look like if you lived on...

The Beginning to the End of the Universe: Will Black Holes Die?

Black holes have this reputation as the ultimate cosmic bullies. They swallow stars, rip...

What Is a Black Hole? A Friendly Guide to Space

Stephen Hawking once remarked, "Look up at the stars and not down at your...

What Is an Exoplanet? How Astronomers Find Worlds We Can’t Even See

For most of human history, the only planets anyone knew about were the ones...

What Is a Supernova? Inside the Universe’s Most Violent Explosions

For a few brief weeks, a supernova can outshine an entire galaxy containing hundreds...

What Is Dark Matter? The Invisible Stuff Holding the Universe Together

Theres something genuinely strange sitting at the heart of modern astronomy, scientists are confident...

How Many Moons Does Saturn Have? The Number Keeps Climbing

If you learned your solar system facts in school anytime before the last couple...

What Is a Nebula? The Cosmic Clouds That Build and Bury Stars

Some of the most breathtaking photos in all of astronomy, the ones that end...

Voyager 1: The Farthest Human-Made Object Is About to Hit a Mind-Blowing Milestone

Somewhere out past the edge of our solar system, moving farther away with every...

Latest articles

Supermoon: What It Really Is, Why It Happens, and When to Catch the Next One

A supermoon is a full moon that lines up with the Moon's closest approach...

What Is a Constellation? A Beginner’s Guide to the Sky’s 88 Star Patterns

A constellation is a group of stars that forms a recognizable pattern in the...

How Many Planets Are There? The Real Answer Is Bigger Than Eight

There are eight planets in our solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn,...

What Is a Galaxy? A Simple Guide to the Great Islands of Stars

A galaxy is an enormous collection of stars, gas, dust, and dark matter, all...