How accurate are past records of sunspots? In a new study published in The Astrophysical Journal, a team of multinational researchers examined the historical record and found that after the unusual period of almost no sunspots, ...
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.
Planetary Sciences
Jul 26, 2024
0
98
Scientists studying sunspots have found important clues about magnetic features in their decay that will help understand the evolution and real origin of these mysterious magnetic phenomena. The findings are published in ...
Bright auroras, with dancing lights in the sky, characterize the clear winter nights of northern Canada. Longer nights during the fall and winter also favor seeing more auroras, but the show is best outside of light-polluted ...
Astronomy
Dec 29, 2023
0
132
Solar rotation, a fundamental characteristic of the sun, is second in importance only to the Schwabe cycle, an approximately 11-year cycle. The energy and matter of the solar atmosphere originate from the interior of the ...
Astronomy
Dec 13, 2023
4
45
Researchers at the Center of Excellence in Space Sciences India at IISER Kolkata have discovered a new relationship between the sun's magnetic field and its sunspot cycle, that can help predict when the peak in solar activity ...
Astronomy
Nov 28, 2023
0
282
In a study published in Nature Astronomy, astronomers from New Jersey Institute of Technology's Center for Solar-Terrestrial Research (NJIT-CSTR) have detailed radio observations of an extraordinary aurora-like display occurring ...
Astronomy
Nov 13, 2023
7
646
Sunspots change in number depending on how much magnetic activity the solar dynamo generates. But there's not total chaos: These changes occur in a cycle, which lasts about 11 years on average. The sun also experiences extended ...
Astronomy
Oct 10, 2023
0
2
In 1859, the Carrington Event, the most intense geomagnetic storm in recorded history, created spectacular auroral displays around the globe, illuminating the night skies so brightly that birds began singing and laborers ...
Astronomy
Jul 18, 2023
0
1
Nearly 5,000 kilometers above the sun's surface lies a century-old question for solar physicists—how are temperatures in the star's upper atmosphere (corona) hundreds of times hotter than temperatures at the sun's visible ...
Astronomy
Jun 14, 2023
1
95
