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EarthSky Voices

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.
Earth

Why the Pacific tsunami was smaller than expected

Find out how earthquakes cause tsunamis, and why the July 2025 Kamchatka earthquake didn't cause tsunami waves as devastating as expected.

Light pollution is impacting astronomy around the globe

Light pollution is affecting astronomical observatories around the world. Increasing light pollution and urban sprawl are impacting even remote sites.

Dark energy surprise suggested by super set of supernovae

A new analysis of supernovae observations hints that dark energy may change strength over time. It could mean we need to recalculate the universe's fate.

Meet Apep, a pair of dying stars in a swirling nebula

Webb has captured an image of Apep, which includes the swirling nebula around 2 dying stars. A scientist explains what we know about it now.