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, from how a star chart is made, to projections and art that maps the night sky, to how an astrolabe works the same way as it did thousands of years ago. Watch the North Star shift across centuries and explore how one sky has been mapped by many traditions. Check what happened on this day in space or see tonight’s moon drawn for where you stand.

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.

✦  Astronomy Picture of the Day  ✦

Red Sun through Wildfire Smoke

July 30, 2026
© Debra Ceravolo Text: Cecilia Chirenti (NASA GSFC, UMCP, CRESST II)
This could be the view from an exoplanet orbiting around a red dwarf star, but it is our own Sun. This image was taken on July 22, 2026, in the Okanagan region in the Canadian province of British Columbia. Wildfire smoke from the Pacific Northwest acted as a solar filter, allowing the photographer to take this photo of the Sun directly. Several sunspots are also visible in this eerie image; just below and right of the center is AR 4493, a fast evolving, giant active solar region and sunspot group. The smoke is made of tiny particles that help block and scatter light with bluer colors, so the light we see coming from the Sun is dimmer and redder than usual (but it is never safe to stare directly at the Sun). Sunsets and sunrises are also more colorful because of the smoke. Some 6 billion years from now, the Sun will actually start to turn redder as it approaches its red giant phase.

Customized Star Charts Coming 4th Quarter 2026

We respect your privacy. Unsubscribe at any time.

✦  EarthSky  ·  Astronomy.com  ·  Phys.org  ✦
Exoplanets Jul 30, 2026

Astronomers just found the first atmosphere on a rocky exoplanet in the habitable zone

Astronomers have detected helium leaking from a rocky exoplanet, a sign that the planet may have an atmosphere. If confirmed, the finding represents the first such detection around an Earth-like wo…

Read
Solar System Jul 30, 2026

An abandoned SpaceX rocket is about to crash into the Moon

In the early hours of Aug. 5 (UTC), an abandoned SpaceX rocket stage is expected to slam into the Moon at around 5,406 miles per hour (8,700 km/h). Launched in January 2025, the rocket sent two …

Read
Uncategorized Jul 30, 2026

Where the night sky is the main event

Greater Zion preserves some of the darkest skies in America. The post Where the night sky is the main event appeared first on Astronomy Magazine.

Read
Space Jul 30, 2026

Wandering black hole spotted shredding a star

Astronomers have spotted a wandering black hole shredding a star. This supermassive black hole is not at the center of a galaxy ... It's roaming the outskirts.

Read
Space Jul 30, 2026

A rocket will hit the moon on August 5: New animation here!

A Falcon 9 rocket will hit the moon at 1:35 a.m. CDT on August 5, 2026. Who can see it? And what might you see? Answers here.

Read
Astronomy Essentials Jul 30, 2026

Visible planets and night sky guide for July and August

EarthSky's visible planets and night sky guide. Find out about the glorious Milky Way, the meteor shower season, a total solar eclipse and more in this video.

Read
Astronomy Jul 30, 2026

Meet the astronomer digging into the Milky Way's 'fossils'

Amina Helmi's passion for the Milky Way is clear as soon as one steps into her small office at the University of Groningen, in the north of the Netherlands.

Read
Astronomy Jul 29, 2026

Little red dots may mark temporary black hole phase

Since their discovery by NASA's James Webb Space Telescope in 2022, little red dots (LRDs) have been the subject of great interest to astronomers. Understanding the nature of these extremely distan…

Read
Astronomy Jul 29, 2026

ESCAPADE's cameras capture Earth and moon

In November 2025, NASA's Mars-bound ESCAPADE (Escape and Plasma Acceleration and Dynamics Explorers) spacecraft launched from Cape Canaveral with special cargo on board: two camera systems designed…

Read