The Rhythm of the Spheres

Reading the Night Sky

Wandering in Astronomy

The night sky is the oldest pattern of man, and every culture reads it differently. The stars above keep silent time, moving to a rhythm we are just now beginning to understand. Astronomy is where math, science, art, music, and words meet in a wondrous collision. In this section of our site, learn the basics of astronomy: from how a star chart is made, to projections and art that map the night sky, to how an astrolabe works just like it did thousands of years ago. Watch the North Star shift across centuries, explore how one sky has been mapped by many traditions, read what happened on this day in space, and see tonight’s moon for your location.

Map the Stars

The math behind star charts, with a projection explorer and a working astrolabe.

The Moving Sky

How the sky shifts across centuries, with a precession clock you can run.

The Traditions

One sky reads many ways, with a same-sky overlay of the world’s constellations.

This Day in the Stars

The sky’s events, discoveries, and lore tied to today’s date.

The Moon Tonight

Its phase and face, drawn live for where you’re standing.

โœฆ  Astronomy Picture of the Day  โœฆ

The Great Meteor Storm of 1833

December 10, 2024
Credit: Engraving: Adolf Vollmy ; Original Art: Karl Jauslin
See this entry on NASA's APOD โ†’
It was a night of 100,000 meteors. The Great Meteor Storm of 1833 was perhaps the most impressive meteor event in recent history. Best visible over eastern North America during the pre-dawn hours of November 13, many people -- including a young Abraham Lincoln -- were woken up to see the sky erupt in streaks and flash es. Hundreds of thousands of meteors blazed across the sky, seemingly pouring out of the constellation of the Lion ( Leo ). The featured image is a digitization of a wood engraving which itself was based on a painting from a first-person account. We know today that the Great Meteor Storm of 1833 was caused by the Earth moving through a dense part of the dust trail expelled from Comet Tempel-Tuttle . The Earth moves through this dust stream every November during the Leonid meteor shower . Later this week you might get a slight taste of the intensity of that 1833 meteor storm by witnessing the annual Geminid meteor shower .

Explore Your Universe: Random APOD Generator

Customized Star Charts Coming 1st Quarter 2027

We respect your privacy. Unsubscribe at any time.

โœฆ  EarthSky  ยท  Astronomy.com  ยท  Phys.org  โœฆ
What's Launching This Week Nov 13, 2026

How to watch Starship Flight 15

SpaceX is set to launch its 15th test flight of Starship on Friday, Nov. 13. For the first time, the company will try to catch both stages of the rocket โ€” the Super Heavy booster and the upper stโ€ฆ

Read
Astronomy Nov 13, 2026

A likely supermassive neutron star might shed light on the mass gap between neutron stars and black holes

A team of astronomers recently identified a red giant star with an unseen binary companion after examining data from the Large Sky Area MultiObject Fiber Spectroscopic Telescope (LAMOST) and the Apโ€ฆ

Read
Astronomy Nov 13, 2026

Gemini and DECam showcase a young Type Ia supernova

A star's explosive demise has added a shiny new feature to NGC 1433, a barred spiral galaxy approximately 50 million light-years away in the southern constellation Horologium (the Pendulum Clock). โ€ฆ

Read
Telescopes and Equipment Nov 13, 2026

REVIEW: Spectrum Optics SkyPilot 127

The smart telescope revolution has grown rapidly over the past few years. Most of these scopes focus primarily on electronic imaging, though, and while amateur astronomers may marvel at the images,โ€ฆ

Read
Robotic Spaceflight Nov 13, 2026

Nov. 13, 1971: Mariner 9 orbits Mars

On May 30, 1971, Mariner 9 launched, setting off on its mission to Mars. On Nov. 13, 167 days later, it entered orbit around Mars, making it the first spacecraft to orbit another planet. With Marinโ€ฆ

Read
Astronomy Nov 13, 2026

Euclid's first data release: A stepping stone to its 3D map of the sky

The ESA's Euclid has already teased us with some early results. In the past, it's given us a small image covering 60 square degrees of the sky, created with a few days of observations. Those imagesโ€ฆ

Read
Space Nov 13, 2026

Mountain-sized asteroid 1999 AN10 to pass close to Earth in 2027

Asteroid 1999 AN10, which might be a mile wide, will pass Earth on August 7, 2027, about 1 lunar distance away. The encounter poses no danger.

Read
Sun Nov 13, 2026

Sun news: How the sun stripped Mars of its air

Sun news November 13, 2026: A year ago, the ESCAPDE spacecraft launched toward Mars. And this mission will also be monitoring the sun.

Read
Astronomy Essentials Nov 13, 2026

Mirach is your guide star to finding 3 galaxies

Mirach in the constellation Andromeda helps stargazers locate the Andromeda Galaxy, the Triangulum Galaxy, and "Mirach's Ghost."

Read