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Sun
Sun news: Fiery filament action, but quiet sun overall
Sun news for May 2, 2026: Sun activity is low with only C flares. But filament activity is fiery on the solar disk we see from Earth.
May 2, 2026
Astronomy Essentials
Tonight
Visible planets and night sky guide for May
Visible planets and night sky guide. The moon is now one day past full. It's rising in the east about an hour after sunset, near bright red Antares.
Moon Phases
May 1 full moon is a Flower Moon and micromoon
The 1st May full moon happens on May 1. It'll look full on the nights before and after that, too. The 2nd May full moon - a Blue Moon - will fall on May 30-31.
May 1, 2026
Space
Surprise! A Jupiter-like exoplanet with water-ice clouds
A Jupiter-like exoplanet with water-ice clouds? NASA's Webb space telescope has found the 1st signs of cirrus-like clouds on exoplanet Epsilon Indi Ab.
May 1, 2026
Earth
Pyrocumulonimbus clouds are thunderheads spawned by fires
Pyrocumulonimbus clouds are fire-driven thunderstorms. The storms can produce lightning and strong winds that make the fire situation worse.
May 1, 2026
Astronomy Essentials
Human World
Happy May Day! Today is an astronomy holiday
Happy May Day! This annual celebration has its roots in astronomy as 1 of 4 cross-quarter days. Dancing around a maypole is a traditional May Day celebration.
May 1, 2026
Human World
May birthstone: The magnificent green emerald
Happy birthday, May babies! The May birthstone is the emerald, a stone once worn by royalty in ancient Babylon and Egypt.
May 1, 2026
Astronomy Essentials
2026 Eta Aquariid meteor shower best before dawn on May 5
May's Eta Aquariid meteor shower is best in 2026 on the morning of May 5. Find a way to block the moonlight and watch in the hours before dawn.
May 1, 2026
Earth
Western US wildfires fewer, but more destructive
A look at western US wildfires over the past 30 years shows they are becoming less frequent. But fires that pop up are also larger and more damaging.
April 30, 2026
Space
Falcon rocket will hit the moon on August 5
A Falcon 9 rocket will hit the moon on August 5, 2026. How fast will it be going? Will we be able to see it? Answers and more here.
April 30, 2026
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