EarthSky | Updates on your cosmos and world

Earthquake in Japan triggers mall collapse in Kumamoto

July 28, 2026

Companion for Betelgeuse update! A new image

A recent image appears to show the faint companion for Betelgeuse. It's the strongest evidence yet that the beloved red supergiant star has a companion star.

EarthSky Voices

July 28, 2026

Moon Phases

The July full moon is the beautiful Buck Moon

The crest of the July full moon, or Buck Moon, falls at 14:36 UTC on July 29. But it will also appear full when it rises in the evening on July 28 and 29.

John Jardine Goss

July 28, 2026

Sun

Sun news: A synchronized double sun eruption

Sun news July 28, 2026: Flares stayed low, but the sun blasted a dramatic double eruption, a filament and a far-side prominence, almost in perfect sync.

July 28, 2026

Visible planets and night sky guide for July and August

EarthSky's visible planets and night sky guide. The moon will look full tonight! Look toward the east after sunset. July’s full moon is called the Buck Moon.

July 28, 2026

Return of Orion the Hunter, ghost of the summer dawn

Orion the Hunter returns to the east at dawn at this time every year. Here's how to watch for this most noticeable of constellations.

Deborah Byrd

July 28, 2026

Brightest Stars

Meet Shaula and Lesath, the Scorpion’s Stinger stars

Shaula and Lesath, known as the Stinger of the Scorpion, are easy to see at the end of Scorpius's tail.

Bruce McClure

Editors of EarthSky

July 28, 2026

Earth

What’s an airplane glory? Here’s how to spot one

An airplane glory is easy to see, if you watch for it. It's the plane's shadow cast on a cloud, or the ground, surrounded by a halo of light.

Editors of EarthSky

July 28, 2026

Earth

Walking shark discovered in Papua New Guinea

Shark Week begins with a remarkable discovery: scientists have identified a new walking shark, proving the ocean still holds secrets worth protecting.

Cristina Ortiz

July 27, 2026

Space

Are we listening for alien intelligence the wrong way?

Some astronomers believe we should search for alien intelligence at higher radio frequencies than those traditionally used in SETI. And they've already begun.

Kelly Kizer Whitt

July 26, 2026

Astronomy Essentials