The U.S. National Science Foundation has released the Daniel K. Inouye Solar Telescope’s first image of a sunspot, a spectacular, zoomed-in view captured on 28 January that shows a remarkably detailed view. While the 4-metre telescope is still undergoing tests and checkout, the image exhibits “a spatial resolution about 2.5 times higher than ever previously achieved, showing magnetic structures as small as 20 kilometres (12 miles) on the surface of the Sun,” said Thomas Rimmele, associate director at NSF’s National Solar Observatory, the organisation that operates the Inouye facility. The image is about 10,000 miles across, large enough for Earth to fit inside.
Corrected sunspot history suggests climate change not due to natural solar trends
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 consistent history of solar activity over the past few centuries. The new record has no significant long-term upward trend in solar activity since 1700, suggesting that rising global temperatures since the industrial revolution cannot be attributed to increased solar activity.
Giant star spots, not dust, likely culprit in dimming of Betelgeuse
Diminishing solar activity may bring new Ice Age by 2030
A new ice age is coming — if the prediction of a Lomonosov Moscow State University researcher and her colleagues is correct. A model that accurately predicts variations in the Sun’s magnetic field suggests a sharp decline in solar output during the years 2030-2040, producing conditions similar to that existing during the 17th century Maunder minimum.