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Sun
Sun news: Earth awaits a blob from the sun
Sun news August 30, 2026: Coronal hole wind pushed Kp to 4+, and a slow CME grazes Earth today. AR4517 is about to depart, leaving a quiet disk behind.
August 30, 2026
Astronomy Essentials
Tonight
Visible planets and night sky guide for August and September
Visible planets and night sky guide: Look for the moon close to Saturn tonight. Plus Jupiter is returning at dawn. And watch the new "this week's sky" video.
Astronomy Essentials
Do the planets revolve around the sun? Not exactly
Do the planets revolve around the sun? Not exactly. The sun and planets orbit a common center of mass, which, right now, is outside the sun.
August 30, 2026
Earth
Do you love twilight? The 3 stages explained
Twilight is that magical time between sunlight and darkness. Astronomers, experts on nighttime, recognize 3 stages of twilight.
August 30, 2026
Constellations
Telescopium the Telescope is below the Teapot
Telescopium the Telescope is a constellation that appears best in southern skies, south of the Teapot. Look for it in dark skies.
August 30, 2026
Space
‘Jellyfish’ on Mars: Image from Curiosity rover goes viral
What is this odd 'jellyfish' on Mars? Possibilities include a cosmic ray artifact, an electronic artifact and what astronomers call a "transient phenomenon." The image went viral this week!
August 29, 2026
Human World
Today's Image
Best eclipse photos! Nearly total lunar August 27-28
EarthSky community photos of the lunar eclipse of August 27-28, 2026. Thanks to all who submitted eclipse photos!
August 28, 2026
Space
Meet a Saturn-sized exoplanet with Earth-like temperatures
TOI-199b is a warm Saturn-sized exoplanet 330 light-years away. New observations by the Webb space telescope show there is methane in its atmosphere.
August 28, 2026
Space
Huge rift valleys on Venus hint at a still-living planet
A new study of huge rift valleys on Venus shows that they are likely younger than previously thought, and might still be geologically active today.
August 28, 2026
Clusters Nebulae Galaxies
The Wild Duck cluster, M11, a lovely open cluster in Scutum
The Wild Duck cluster, also known as M11, is an open star cluster in the constellation Scutum that appears best through binoculars or a telescope.
August 28, 2026
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