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#sunspots

0 Beiträge0 Beteiligte0 Beiträge heute
Öffentlich
MPI für Radioastronomie

Wow, what a fascinating Astronomy Day! The sky was mostly clear in both Bonn and Effelsberg, and our visitors were able to experience the partial solar eclipse (SoFi) on March 29 with their own eyes!

A solar eclipse occurs when the Moon passes between the Earth and the Sun. This only happens during a new moon and when the Moon is aligned with the Sun and Earth. There are three types of solar eclipses:

👉 Total SoFi - when the Sun is completely covered. A total solar eclipse lasts a maximum of 7 minutes and 32 seconds;
👉 Partial SoFi - when only a part of the Sun is covered;
👉 Annular SoFi - when the Moon is too far away and therefore too small to completely cover the Sun.

Since the Moon is 400 times smaller than the Sun and exactly 400 times closer to the Earth, it can completely cover the Sun when viewed from Earth. However, a solar eclipse cannot be observed equally from all places on Earth, but only within a narrow geographic area. But wherever you are, remember: Never look directly at the Sun without proper eye protection! For example, SoFi glasses or a welding helmet with the appropriate protection level are suitable, but not regular sunglasses or binoculars.

In addition to the partially obscured Sun, several sunspots were also visible. The number of sunspots depends on the current phase of the Sun's 11-year activity cycle, which is why they are not always visible.

#SaveTheDate:
📢 The next partial solar eclipse in Germany: August 12, 2026 – over 80% coverage;
📢 The next total solar eclipse visible from Germany: in 2081.

#solareclipse#astronomy#sunspots
Öffentlich
Bruce MacDonald

This article reminds me of the old story:

Guy tells a friend: "I see spots before my eyes!"

Friend: "Have you seen a doctor?"

"No, just spots!"

Astro Bob: Let's Count Sunspots
"The original forecast for the current cycle, dubbed Cycle 25, was made in 2019 with the peak predicted for this upcoming July. However, more recent forecasts hint that we reached maximum in late 2024, so we may have already passed the peak. A more definitive answer will have to wait until the sun enters a slump. Then we'll be able to look back with hindsight and better frame the time."
duluthnewstribune.com/lifestyl

Sun sunspots March 16 2025.jpg
Duluth News Tribune · Astro Bob: Let's count sunspots!Von Bob King
#sunspots#astronomy#Cycle25
Öffentlich
Levka

#earthquakes #sunspots

"On a dynamic planet like Earth, it can be easy for drivers of change to go unnoticed – but scientists have now established and investigated an unexpected link between the Sun and our homeworld.

Sunspots, and therefore solar activity, cause seismic activity, according to a team led by computer scientist Matheus Henrique Junqueira Saldanha of the University of Tsukuba in Japan. Their new research reveals how.

'Solar heat drives atmospheric temperature changes, which in turn can affect things like rock properties and underground water movement,' Junquiera Saldanha says."

sciencealert.com/the-suns-acti

ScienceAlert · The Sun's Activity Can Trigger Earthquakes, And Now We Know HowOn a dynamic planet like Earth, it can be easy for drivers of change to go unnoticed – but scientists have now established and investigated an unexpected link between the Sun and our homeworld.
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