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Space
Does asteroid Nysa have 3 lobes and a moon?
The asteroid Nysa might be the first-known 3-lobed body. And the new observations also reveal a tiny moon orbiting the asteroid.
August 2, 2026
Human World
August birthstone: Peridot, spinel, or sardonyx
The August birthstone can be crystalline green peridot, colorful spinel, or banded sardonyx. Take your pick of these colorful gemstones, August babies!
August 2, 2026
Sun
Sun news: CME bearing down on Earth as storm watch begins
Sun news August 2, 2026: The big CME from July 30 arrives today. G1-G2 storms are likely, with a slight chance of G3. Auroras could reach as far south as NYC!
August 2, 2026
Tonight
Find the Andromeda Galaxy using Cassiopeia
Leave the city behind this weekend, and go galaxy-hunting! Cassiopeia - one of the easiest constellations to identify - points the way to the Andromeda Galaxy.
August 2, 2026
Astronomy Essentials
Tonight
Visible planets and night sky guide for August
EarthSky's visible planets and night sky guide. Late this evening, the waning gibbous moon hangs near the bright planet Saturn. They'll be visible through dawn.
August 2, 2026
Space
Star formation in Andromeda – our neighbor – is winding down
Star formation in Andromeda - the giant spiral next door to us - is winding down, astronomers say. And it could be related to a nearby dwarf satellite galaxy.
July 31, 2026
Earth
Lake Powell is shrinking toward ‘dead pool’ levels
Lake Powell is the 2nd-largest reservoir in the U.S. But with climate and usage stresses, the lake is shrinking. It could reach dead pool by spring 2027.
July 31, 2026
Astronomy Essentials
Planet-observing tips: Here’s how to tour the solar system
Get our top tips for planet-observing, from the innermost and elusive Mercury out to faint blue Neptune and everything in between. Top tips here!
July 31, 2026
Astronomy Essentials
Look for Mercury farthest from the morning sun on August 2
Mercury will reach its greatest elongation - greatest distance from the sunrise - on August 2, 2026. Look east at dawn. It'll be close to Jupiter on August 15.
July 31, 2026
Space
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.
July 30, 2026
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