Sunspot number: What is the sunspot number? The Radio Sun Cosmic Rays Solar Cycle 25 is intensifying, and this is reflected in the number of cosmic rays entering Earth's atmosphere. Neutron counts from the University of Oulu's Sodankyla Geophysical Observatory show that cosmic rays reaching Earth are slowly declining--a result of the yin-yang relationship between the solar cycle and cosmic rays. The first clouds were detected over Antarctica on Nov.
Updated: Feb. In the daily map, above, each dot is a detected cloud. As the season progresses, these dots will multiply in number and shift in hue from blue to red as the brightness of the clouds intensifies.
This is an AI Free Zone! Text created by Large Language Models is spreading rapidly across the Internet. It's well-written, but frequently inaccurate. If you find a mistake on Spaceweather. It has already caused one minor G1 -class geomagnetic storm, and more are possible as Earth moves deeper into the stream. Arctic auroras are likely on Feb. Aurora alerts: SMS Text. Yesterday, it recorded a superior conjunction of Mercury only a few degrees from the sun:. In the short animation, above, Mercury is the bright star-like object directly below the artificially-eclipsed sun.
There's nothing special about a solar conjunction of Mercury. They happen every two months, more or less. However, observing this event confirms that CCOR-1 is operating as expected with impressive sensitivity. CCOR-1 picked them up with ease.
Asteroid YR4 now has a 2. Current probabilities are based on observations spanning 45 days, a growing number which is improving our knowledge of the asteroid's orbit. Click to view and play with an interactive orbit of asteroid YR4.
