When you buy through links on our articles, Future and its syndication partners may earn a commission. The sun, imaged on Sept. 10, 2025 in ultraviolet light, showing plenty of activity. | Credit: ...

Aurora records in royal chronicles from Korea show that during the 'Maunder Minimum' between 1645 and 1715, the sun's solar cycles became several years shorter than they are today. When you purchase ...

Stephen has degrees in science (Physics major) and arts (English Literature and the History and Philosophy of Science), as well as a Graduate Diploma in Science Communication. Stephen has degrees in ...

At the end of the last solar cycle in 2019, the official predictions were that the next cycle would be just as mild as its predecessor. Those predictions were wrong. The current Solar Cycle 25 turned ...

A large solar flare erupts from the Sun’s surface in this image from NASA’s Solar Dynamics Observatory taken on 7 March 2012. Credit: NASA/GSFC/SDO Sunspots change in number depending on how much ...

Using modern techniques, researchers have re-examined Johannes Kepler's half-forgotten sunspot drawings and revealed previously hidden information about the solar cycles before the grand solar minimum ...

BOULDER–Challenging conventional wisdom, new research finds that the number of sunspots provides an incomplete measure of changes in the Sun’s impact on Earth over the course of the 11-year solar ...

The Sunspot Number, the longest scientific experiment still ongoing, is a crucial tool used to study the solar dynamo, space weather and climate change. It has now been recalibrated and shows a ...