EarthSky | Updates on your cosmos and world

Have we found the first exomoon … around a brown dwarf?

July 22, 2026

Our galaxy flipped after a collision, say astronomers

Our galaxy flipped after a collision with a dwarf galaxy 10 billion years ago, changing the Milky Way's evolution, new simulations suggest.

Kelly Kizer Whitt

July 22, 2026

Space

A rocket will hit the moon on August 5: Newest updates 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.

Kelly Kizer Whitt

July 22, 2026

Sun

Sun news: 23 flares from new powerhouse sunspot region!

Sun news July 22, 2026: Powerhouse region AR4493 fired 23 of the day's 24 flares, including two M flares. With max complexity, it likely has more in store!

July 22, 2026

Another new Psyche mission flyby image of Mars

NASA released a composite image of Mars lit like a crescent as the Psyche mission flew by for a gravity assist. Watch a stunning time lapse of the whole flyby.

Kelly Kizer Whitt

July 22, 2026

Astronomy Essentials

Tonight

Visible planets and night sky guide for July

EarthSky's visible planets and night sky guide. Don't miss today's livestream at noon CDT! Deborah Byrd brings you meteors and the moon.

July 22, 2026

Clusters Nebulae Galaxies

Find M4: An easy to spot globular cluster near Antares

Find M4, one of the easiest globular star clusters to spot. It's located just next to reddish Antares, the brightest star in Scorpius the Scorpion.

Deborah Byrd

July 22, 2026

Space

1st atmosphere detected on Earth-like, habitable-zone world

Scientists have found an atmosphere on rocky exoplanet LHS 1140 b. It's the 1st atmosphere detected on a rocky world in the habitable zone of its star.

Paul Scott Anderson

July 21, 2026

Human World

Large Hadron Collider upgrade could demystify Higgs boson

An ongoing Large Hadron Collider upgrade could transform the machine's capability, helping it unlock the secrets of the Higgs boson particle.

EarthSky Voices

July 21, 2026

Brightest Stars

Summer Triangle star: Altair is variable and spins fast!

Altair, in the constellation Aquila the Eagle, is one of the closest stars to our solar system. It's variable in an unusual way, and it spins very fast!

July 21, 2026