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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The Wonders of the Constellation Andromeda: Stars, Myths, and Galaxies

Fall evenings have a certain magic to them, the air gets crisp, the sky...

Have You Ever Wondered Why There Are No Green Stars?

Take a good look at the night sky sometime and you'll notice stars come...

Understanding Jupiter: Size, Orbit, and the Distance from the Sun to Jupiter

Look up on almost any clear night and theres a decent chance you'll spot...

The Mystery of the Ring Around the Moon: What Causes This Winter Phenomenon?

Step outside on a cold, clear night sometime this winter and look up. If...

A Complete Guide to the Ara Constellation: The Celestial Altar

If you've ever spent a summer night scanning the sky south of Scorpius, theres...

O’Neill Colonies: The Ultimate Concept for Space Settlement

Every so often a space idea comes along that sounds like pure science fiction...

Astronomers Discover Earth’s Nearest Black Hole

For most of human history, black holes felt like something that only existed in...

What is Hoag’s Object?

If you scan through deep space photos taken by the Hubble Space Telescope, most...

Venus: Size, Distance from the Sun, Orbit

When you look up at the evening sky right after sunset, you can often...

The Colors of the Planets: What Are They and Why Do They Vary? planet colors

If you line up high resolution photos of all eight planets in our solar...

What Would Happen if the Earth Stopped Spinning?

Right now, as you sit comfortably on your couch reading this on your phone...

Neptune at a Glance: Size, Orbit, and Solar Distance

Out on the chilly edges of our solar system sits a deep blue world...

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...