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 undertand. Astronomy is where math, science, art, music and words meet in a wonderous collision. On this section of our site, learn the basics, from how a star chart is actually made, to projections and art that map the night sky, to how astrolabe work the same as they did thousand 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  ✦

A Planetary Nebula with Cosmic Buckyballs

June 4, 2026
What is happening inside this unusual nebula? Planetary nebula Tc 1, captured here in exquisite detail by the James Webb Space Telescope, is the celestial site where buckyballs were first identified in 2010. Buckminsterfullerene — as buckyballs are officially called — is a molecule with 60 carbon atoms (C60) arranged in the shape of a soccer ball. The molecule is named for architect Buckminster Fuller because of its resemblance to the geodesic dome he helped popularize. Webb’s new data reveal where the C60 molecules live in this nebula, and the geometry is striking: they populate a thin spherical shell around the central star, visible here as the bright edge of the nebula’s glowing orange central region. Look closely near the nebula’s heart and a more perplexing feature emerges: a delicate structure shaped uncannily like an upside-down question mark, fitting punctuation for the many questions this nebula still poses.

Customized Star Charts Coming 4th Quarter 2026

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✦  EarthSky  ·  Astronomy.com  ·  Phys.org  ✦
Today in the History of Astronomy Jun 20, 2026

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Today's Image Jun 19, 2026

34 dust devils on Mars in 1 shot! Can you spot them all?

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Astronomy Jun 18, 2026

Long gamma-ray bursts may trace collapsing stars rather than neutron-star mergers

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