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Human World
It’s time for Manhattanhenge! Here’s how to see it
Each year around May 28 and July 11, New Yorkers watch for Manhattanhenge, an alignment of the sunset along city streets. Here's how to see it.
May 27, 2026
Earth
An undersea volcano is erupting in the South Pacific
An undersea volcano began erupting in the Bismarck Sea off the coast of Papua New Guinea on May 8, and it is still going. Will the volcano birth a new island?
May 27, 2026
Astronomy Essentials
Tonight
Visible planets and night sky guide for May and June
Visible planets and night sky guide. Don't miss today's exciting video with EarthSky's Deborah Byrd about the upcoming Blue Moon. Watch today at noon!
May 27, 2026
Constellations
Virgo the Maiden represents a harvest goddess
Virgo the Maiden is the largest of the zodiac constellations. It's large and faint, but its brightest star Spica is easy to find.
May 27, 2026
Sun
Sun news: C9.7 flare nearly hits moderate levels
Sun news for May 27, 2026: C9.7 flare nearly hits moderate! AR4446 gains beta-gamma. Coronal hole winds are arriving today. Far-side regions are still fiery.
May 26, 2026
Earth
Why did big, fierce T. Rex have such tiny arms?
New research says Tyrannosaurus rex might have evolved to have small arms because their large heads became more important in taking down prey.
May 26, 2026
Tonight
Venus-Jupiter conjunction in June: Start watching now!
Get ready for a spectacular Venus-Jupiter conjunction! You can already start watching the planets now after sunset. The big event happens on June 8 and 9.
May 26, 2026
Space
Hot Jupiter exoplanet has cloudy mornings and clear evenings
New observations with the Webb space telescope of the hot Jupiter exoplanet WASP-94A b show that sandy clouds fill the morning skies, but dissipate by evening.
May 26, 2026
Brightest Stars
Spica, the bright beacon of Virgo, is 2 stars
Spica is the brightest star in Virgo and a scorching-hot pair of stars, whirling very closely around one another. One of them may go supernova someday.
May 26, 2026
Astronomy Essentials
Blue Moon – and smallest moon of 2026 – on May 30-31
There's a full Blue Moon overnight on May 30-31, 2026. A Blue Moon is the 2nd of 2 full moons in a calendar month or the 3rd of 4 full moons in a single season.
May 25, 2026
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