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Galaxy Chronicle

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Planet Earth

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%...
Astronomy for Beginners

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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Astronomy for Beginners

Is the Moon a Planet: Why Our Nearest Neighbour Doesn’t Make the Cut

The Short Answer No, the Moon is not a planet. It's a natural satellite, which...
Planet Earth

How Fast Does the Earth Spin: The Dizzying Speed You Never Feel

The Short Answer At the equator, the Earth spins at roughly 1,670 kilometres per hour,...
Space Missions & Discoveries

How Long Does It Take to Get to the Moon: From a Few Hours to Over a Year

The Short Answer For the crewed Apollo missions, the trip to the Moon took about...
Astronomy for Beginners

Why Is the Moon Orange Tonight: The Simple Science Behind a Glowing Red Moon

The Short Answer The Moon usually looks orange or red because it's sitting low on...
Planets & Solar System

Is Pluto a Planet: The Real Story Behind the Solar System’s Most Famous Demotion

The Short Answer No, Pluto is no longer classified as a planet. In 2006 the...
Space Missions & Discoveries

How Long Does It Take to Get to Mars: Why the Red Planet Is a Seven-Month Trip

The Short Answer Getting to Mars usually takes about seven months. Most robotic missions have...
Planets & Solar System

Does Venus Have Moons: Why Earth’s Twin Is a World Without a Single Moon

The Short Answer No, Venus has no moons at all. Zero. Along with Mercury, it's...
Astronomy for Beginners

Cassiopeia Constellation: How to Find the Vain Queen’s W in the Night Sky

Some constellations take real effort to trace. You squint, connect faint dots, and hope...
Galaxies & Deep Space

Betelgeuse: The Doomed Red Supergiant That Could Explode as a Supernova

Find Orion on a winter night and look at the hunter's shoulder, the bright...
Astronomy for Beginners

The Orion Nebula (M42): A Stellar Nursery You Can See With Your Own Eyes

Most of the jaw-dropping objects in deep space are hopelessly out of reach. You...
Astronomy for Beginners

Sirius, the Dog Star: Everything About the Brightest Star in the Night Sky

On a crisp winter evening, step outside and look toward the south. If you...
Astronomy for Beginners

The Big Dipper: How to Find the Sky’s Most Famous Star Pattern and Use It to Find North

Almost everyone has spotted the Big Dipper at some point, even people who swear...
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Planet Earth

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...
Astronomy for Beginners

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...
Planets & Solar System

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,...
Galaxies & Deep Space

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...