12 October 2016
Proxima Centauri reveals yet more intrigue as a cycle of dramatic sunspots is observed
... a cool, red dwarf, the star has a regular cycle of sunspots. At first glance, Proxima Centauri seems nothing like our Sun as... minimum, whilst during a solar maximum typically more than 100 sunspots cover less than one percent of the Sun's surface on ...
25 November 2020
Solar astronomers "listening" to the Sun can now predict future sunspots
.... This change then allows scientists to determine if sunspots may be present. As such, helioseismology helps researchers ‘... NSF team will be carefully watching the evolution of the new sunspot group, which was first identified in far-side images on ...
10 May 2016
When sunspots are minimal, the solar magnetic field is at a maximum, say researchers
...weak, so weak that it is not capable of generating sunspots or other activity. However, results from the study suggest that...periods in which solar observers noted an apparent lack of sunspot activity is the Maunder Minimum. This occurred between 1645 ...
June 2019
Solar superstorms and their effects on Earth
...spacecraft In the late morning of 1 September 1859, the British amateur astronomer Richard Carrington was sketching a massive sunspot from his observatory in England when the image became unfocused. He soon realised that he was observing a phenomenon...
August 2019
Lessons from the Sun
.... The left image in ultraviolet light highlights the dark sunspot and surrounding hot plasma. The right image in visible ...Sun. When these structures present themselves as ‘delta’ sunspots observers pay keen attention, because they know their strong,...
May 2021
Forecasting space-weather effects on Earth
... the heat of the interior from reaching the surface, creating relatively cooler zones called sunspots. The magnetic field lines near sunspots often twist and realign, and these changes can trigger a sudden explosion of electromagnetic...
