A Rare Six-Planet Parade Lights Up the Pre-Dawn Sky : August 12, 2026

If you’re willing to set your alarm a little earlier than usual this week, the night sky is about to throw one hell of...

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....

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...

Saturn: Size, Distance From the Sun, and Its Slow, Tilted Orbit

Saturn is the planet everyone recognizes instantly thanks to its rings, but the numbers...

What Is Geothermal Energy?

If you've ever wondered what is geothermal energy and how heat buried deep beneath...

How Far Is the Sun From Earth? The 93-Million-Mile Answer and Why It Keeps Changing

The Sun sits an average of about 93 million miles (150 million kilometers) from...

How Old Is the Universe? The 13.8-Billion-Year Answer and How We Measured It

The universe is about 13.8 billion years old. More precisely, 13.787 billion years, give...

Top 5 Space Discoveries of 2026 So Far You Can’t Miss

Last Tuesday, I sat on my back porch with a pair of binoculars, staring at the velvet night sky. It felt like a quiet...

How Many Earths Fit in the Sun: Just How Big Our Star Really Is

The Short Answer About 1.3 million Earths could fit inside the Sun. That's the kind...

What the Apollo Moon Rocks Actually Told Us

One of the very first things Neil Armstrong did after climbing down the ladder...

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

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...

How Far Is the Sun From Earth? The 93-Million-Mile Answer and Why It Keeps Changing

The Sun sits an average of about 93 million miles (150 million kilometers) from...

The Taurus Constellation: How to Find the Bull, Its Red Eye, and Two Dazzling Star Clusters

Some constellations make you work to see the picture. Taurus practically hands it to...

What Is the Milky Way Galaxy? Everything You Need to Know

Have you ever looked up at a clear night sky and wondered about our...

What Is a Wormhole? Cosmic Shortcuts That Might Not Actually Exist

Science fiction loves wormholes, tunnels through space and time that let a ship skip...

The Eta Aquariids Meteor Shower: Watch Dust From Halley’s Comet Light Up the Sky in 2026

Here's a lovely thought to hold onto next May. When you catch a shooting...

Why Is Mars Called the Red Planet?

If you step outside on a clear night and look up at the right...

The Photo That Needed an Earth-Sized Camera to Take

Nobody had ever seen a black hole. Not because telescopes weren't powerful enough in...

How Hot Is the Sun? A Layer-by-Layer Look at Our Star’s Blistering Temperatures

How hot is the sun? It depends entirely on which part you mean. The...

The Total Solar Eclipse of August 12: Who Will See It and How?

On August 12, 2026, the Moon will pass directly between Earth and the Sun,...

How Far Is the Sun From Earth? The 93-Million-Mile Answer and Why It Keeps Changing

The Sun sits an average of about 93 million miles (150 million kilometers) from...

Planets

What Colors Are the Planets in Our Solar System? (Including the Color Planet Venus)

Flip through any old astronomy textbook and you'll usually find the planets lined up in a neat row of bold, saturated colors, angry red Mars, deep blue Neptune, a swirling orange and cream Jupiter. Its a great visual, but its also not always the...

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...

What’s the Best Time of Year to Watch the Stars?

There’s something magical about stepping outside on a clear night and looking up at...

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...

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...

Space Missions

What is the Distance from the Jupiter to the Sun? (Facts & Figures)

Ask most people to name the planets in order and they'll usually get through Mercury, Venus, Earth, and Mars without much trouble. Then things...

Sirius, the Dog Star: The Brightest Light in Our Night Sky and the Tiny Ghost Beside It

On a clear winter night, step outside and look toward the south. There is...

How Far Is the Sun From Earth? The 93-Million-Mile Answer and Why It Keeps Changing

The Sun sits an average of about 93 million miles (150 million kilometers) from...

The Little Dipper Constellation: How to Find the Sky’s Most Useful Star Pattern

Here's a funny thing about the Little Dipper. Almost everyone has heard of it, plenty of people think they've seen it, and most of them are actually looking at something else entirely. It's the shy cousin of the famous Big Dipper, dimmer and trickier...

Jupiter: Size, Distance From the Sun, and Orbit

Jupiter took most of the leftover material from the Sun's own formation, ending up with more mass than every other planet in the solar...

Planet Earth

Types of Galaxies: Spiral, Elliptical, and Irregular Explained

Every galaxy you've ever seen a photo of falls into one of a small...

The Rings of Neptune: The Solar System’s Faintest, Strangest Halo

Everybody knows Saturn has rings. They're the poster child, the show-off of the solar...

Astronomers Discover the Nearest Black Hole to Earth

Black holes have a reputation for being distant, exotic objects, the kind of thing...

How Do Astronauts Sleep in Space Explained Simply

Did you know astronauts see 16 sunrises and sunsets every day? This fast pace...

This Asteroid Has Been Watched for 169 Years, and It Just Turned Out to Be Three Rocks Wearing a Trench Coat

Asteroid 44 Nysa has been sitting in astronomers' sights since 1857, bright, big, and stubbornly hard to pin down. Every few decades, someone got a slightly better look and walked away more confused than before, first it looked stretched out, then maybe two lumps...

All Articles

Astronomers Just Found a “Black Hole Star,” a Cosmic Object That Shouldn’t Exist

For years, the James Webb Space Telescope has been spotting mysterious, extremely bright red...

How Will the Universe End? The Three Leading Theories

Every star will eventually burn out, every galaxy will drift apart, and given enough...

How Many Galaxies Are in the Observable Universe?

Point the Hubble Space Telescope at what looks like a completely empty patch of...

What’s the Difference Between a Galaxy and a Solar System?

These two terms get mixed up constantly, and honestly, it's an easy mistake to...

How Many Moons Does Jupiter Have? The 2026 Count

Jupiter has 115 officially recognized moons as of August 2026, according to NASA and...

A Magnetar Just Gave Scientists the Best Evidence Yet That Empty Space Isn’t Really Empty

A quantum physics prediction sitting untested for 90 years may have finally found its...