Rains Swamp the Gandak River

APOD: 2026 October 2 – The Complete Sharpless Catalog: 313 Nebulas

What does it take to image hundreds of nebulas? Today’s image contains the entire Sharpless Catalog of H II Regions, tot…

Underwater umbrellas for coral reefs could help protect against heat damage

High sea temperatures driven by the climate crisis damage corals, bleaching them ghostly white and killing them. While r…

Cosmic-ray particles help probe powerful electric fields inside thunderstorms

An instrument built to study cosmic rays has turned out to be a powerful tool for investigating thunderstorms. Earlier o…