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EarthSky Voices

Rare quadruple star system could unlock brown dwarf mystery

A quadruple star system consisting of 2 red dwarfs and 2 brown dwarfs offers insight in the mystery of brown dwarfs, also known as failed stars.

Iberian Peninsula wildfires bring smoky skies to Europe

See a satellite view from space showing the Iberian Peninsula wildfires and the smoke that is degrading air quality in the region.

‘Eye of Sauron’ blazar is source of a powerful cosmic jet

Astronomers have captured an image of the origin of a cosmic jet. The image resembles the Eye of Sauron from the Lord of the Rings.

New type of supernova, as a black hole triggers a star explosion

Astronomers believe they've found a new type of supernova. They say it exploded as a star tried to envelop its black hole companion.

Meet intermediate black holes: Between stellar and massive

Intermediate-mass black holes have masses between stellar black holes and supermassive black holes. They are rare and hard to detect.

Why flash floods in the U.S. have been extreme in 2025

Parts of the United States have seen extreme flash floods in 2025. Get the reasons why from a scientist who studies extreme precipitation events.
Space

Analyzing binary stars with AI brings new insights

Scientists say AI could be used to massively decrease the time it takes to compute the properties of the complext orbits of binary stars.

Meet a monster black hole at the dawn of time

Astronomers have spotted a monster black hole at the dawn of time. It currently holds the record for earliest confirmed black hole. More here.
Spaceflight

Europa Clipper successfully tests radar during Mars flyby

Europa Clipper tested its radar during a Mars flyby in March 2025. The newly announced results show the instrument is working as hoped.

World megaflash lightning record set in U.S.

On July 31, 2025, the World Meteorological Organization certified a new lightning record for the longest lightning bolt, 515 miles (829 km) in extent.