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Astronomy Central

Sunrise & Sunset Times

Day Light Map

Day and Night World Map

Where is the Sun directly overhead right now?

Skyline at twilight with lights reflecting on the water.

Twilight, Dawn, and Dusk

What are the three stages of twilight?

Diagram showing the distance between the Sun and Earth at different times of the year (perihelion and aphelion).

Perihelion and Aphelion

When is Earth nearest and farthest from the Sun?

Opened book with yellow pages and red bookmark on blue background.

Read more about the Sun

List of all related articles

Moon

Moonrise & Moonset Times

Moon Phases in Your City

Moon Light Map

Moon Light World Map

Where is the Moon visible right now?

Illustration showing the Moon orbiting Earth in Space.

Moon Phases Visualized

What are the positions of Earth and the Moon right now?

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Read more about the Moon

List of all related articles

Solar & Lunar Eclipses

Eclipse Lookup

Feb 17, 2026:Annular solar eclipse

Mar 2–3, 2026:Total lunar eclipse

Vector illustration of Earth seen from space with total solar eclipse in the background.

All Eclipses and Planet Transits Worldwide

Eclipses and transits from 1900 to 2199.

Illustration of a person lying down using a laptop, with a night sky background featuring Moon phases, eclipses, and shooting stars.

Upcoming Live Streams

Watch LIVE coverage of our solar and lunar eclipses.

Opened book with yellow pages and red bookmark on blue background.

Read more about eclipses

List of all related articles

Illustration of night sky with stars and a crescent moon.

Earth & Space Library

From Apogee to Zodiacal light, browse our astronomy articles.

Illustration of a person holding a megaphone.

Keep up with events in the sky and space.

Illustration of night sky with stars and a crescent moon.

Astro Events 2025

Notable dates for skywatchers and stargazers.

Equinoxes & Solstices

Astronomical Season Calculator

Blooming crocuses are a symbol of spring.

The start of spring—also called the vernal equinox.

The sun is shining bright on the blue sky.

Summer Solstice

The start of summer, and the longest day of the year.

Falling autumn leaves on a blue background.

The start of fall/autumn—also called the autumnal equinox.

Snowflake on blue background.

Winter Solstice

The start of winter, and the shortest day of the year.

Opened book with yellow pages and red bookmark on blue background.

Read more about the seasons

List of all related articles

Meteors, Comets & Asteroids

Quadrantids (January)
Lyrids (April)
Eta Aquarids (May)
Perseids (August)
Draconids (October)

Orionids (October)
Leonids (November)
Geminids (December)
Ursids (December)

Illustration of a meteor shower

Calendars, animations, and tips for catching shooting stars.

Illustration of two people watching a bright comet streaking across a starry night sky over a mountainous landscape.

What is a comet?

Black and white image of an asteroid floating in space, with a starry background.

What is an asteroid?

Opened book with yellow pages and red bookmark on blue background.

Read more about meteors

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Night Sky & Planets

Night Sky Lookup

Illustration of a night sky with visible constellations outlined above a dark horizon at twilight.

The Sky Tonight

Find and track the Sun, Moon, planets, and stars.

Illustration of a distance arrow between a planet and Earth

Planet Distance & Brightness

Which planet is closest to Earth right now?

Illustration of the solar system showing planets in order from the Sun to Saturn.

Planet Sizes & Order

Which are the biggest and smallest planets?

Vector illustration of thick book and a pencil

Astronomical Glossary

Know your albedo from your antumbra.

Opened book with yellow pages and red bookmark on blue background.

Read more about the planets

List of all related articles

Our Solar System

Telescope view of the Sun from Earth.

Our Home Star

Planet Mercury in detail

The Iron Planet

Venus captured by NASA's Mariner 10 spacecraft

Our Twin Planet

A view of the Earth in space.

Our Living Planet

The Moon (just after Full Moon).

Our Satellite

A view of the planet Mars.

The Red Planet

3D rendered image of Jupiter.

The Massive Planet

3d render of the planet Saturn

The Ringed Planet

A close-up of Uranus, taken by the Voyager 2 spacecraft in January 1986.

The Sideways Planet

Image of Neptune against a black background.

The Farthest Planet

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