Astronomy

Explore the Sun, Moon, planets, and the changing night sky. Discover moon phases, eclipses, meteor showers, and other celestial events that mark the rhythms of the year.

Learn what a New Moon looks like, why you can’t see it, and when the next New Moon will occur

All about Mercury, the planet closest to the Sun

Weird but True: Fascinating Universe Facts You Probably Didn’t Know

When Earth is Closest and Farthest from the Sun in 2027

Images on the Moon: The Man in the Moon and Other Legends

Facts, Folklore, and Everything You Need to Know About the Fall Equinox

Compass-Free Navigation: Survival Tips for Hiking & Camping

Don’t miss the Geminids—December’s top meteor shower with up to 75 shooting stars an hour!

How to Calculate the Time of Moonrise Today

What people mean when they say “Blood Moon,” why the Moon sometimes looks red, and where the myths come from.

Betelgeuse Star: Facts, Viewing Tips & Supernova Potential

Tips on how see Saturn at its closest point to Earth

Milky Way Stargazing Guide: Best Time, Places, and Tips

Let’s Really Know the Planets

Shine On, Harvest Moon! Facts and Folklore

Free August Sky Map (Star Chart)

Curious Ways Our Ancestors Tracked the Seasons

When is the Winter Solstice, and What Is it All About?

Everything You Should Know About the Longest Day of the Year

A Guide to Traditional Full Moon Names and Their Meanings

Discover why dewpoint matters more than relative humidity for how muggy or comfortable the air really feels.

Planet Neptune: 10 Facts About the Other Blue Planet

A very good year for bright, frequent meteors thanks to an early‑setting crescent Moon

Why It's Not Worth the Worrying

The frequency and rarity of a total solar eclipse

Find Out When to See a Supermoon in 2026

Uncover the story behind the Buck Moon and what makes July an important month in Moon lore.

Do Your Own Stonehenge Thing—Without Moving a Single Rock

It's Hot, Hot, Hot This Summer! See Average Temperatures for Your Region

Look for the Bright Star Vega in July!

Yes... It Gets Dark Earlier After the Solstice.

Uncover the stories, science, and symbolism behind the first Full Moon of summer in 2026.

From Europa to Titan: Exploring the Weirdest Moons in Space

Think You’re Standing Still? Think Again. Discover the Incredible Speeds at Which You're Spinning, Orbiting—and Why You Don’t Feel a Thing.

What is special about a crescent moon?

Learn Something New About the Longest Day of the Year!

Black Hole in star system we can see with naked eye

Mark Your Calendar for May 2026’s Full Moons!

Welcome to Your Stargazer’s Toolkit

Explore spring’s first Full Moon and the traditional names that celebrate the season’s return.

Types of Galaxies and How to Spot Them This Spring!

Fun Facts and Frequently Asked Questions About the March Equinox

March’s Full Worm Moon Comes With a Rare Lunar Eclipse

Watching the sun, stars, Moon—and dust bunnies!

Authoritative definitions of the Sun, Moon, stars, and planets.

The Origins of the 5 Ocean Names

The same side of the Moon always faces Earth. So what's on the far side?

Interesting Facts About the Moon You Didn’t Learn in School

Why December’s Full Moon is a Supermoon and Called the Cold Moon

Lunar Perigee and Apogee and the Moon's Orbit

How Carbon Dioxide Shaped Earth, Mars, and Venus

After the Shortest Day of the Year, Get Ready for Sunlight!

2026 Skywatching Guide to the Best Moons, Planets & Meteor Showers in the Night Sky

Discover why Regulus has fascinated astronomers for thousands of years, from ancient royal symbolism to rare planetary encounters.

Explore ancient Moon superstitions and dream meanings—from omens of luck and love to eerie warnings written in the night sky.

Look for the Dog Star this month!

Tide Terminology Explained: A Guide to Tides and Tidal Ranges

Discover Why February’s Moon is Called the Snow Moon and How to See It at Its Peak

This bizarre day is full of amazing sky-related stuff

Discover why stars twinkle, why planets usually don’t, and what atmospheric conditions make the night sky shimmer.

Does the Moon Affect the Weather? A Historic Almanac Chart Explained

Spot the "Dog Star" on New Year's Eve!

Celebrating Natural Symbols of the Winter Solstice

What Was the "Christmas Star"? When Can You See It?

The Search for Exoplanets and Extraterrestrial Life

Why the Earliest Sunset of the Year is NOT on the Solstice

Free March Sky Map (Star Chart)

Free May Sky Map (Star Chart)

Stargazing in the February Night Sky

Brightest Stars and Constellations of the Night Sky