World’s largest solar telescope shows the Sun in detail — with a giant spot larger than the Earth
The largest solar telescope named Daniel Inouye, located in Hawaii, took incredibly clear images of a spot on the Sun, which is 25 thousand kilometers wide and long.
What does the Sun hide? Ancient drawings by a mathematician reveal a 400-year-old secret
Astronomers have used observations by a 17th-century German mathematician to determine the state of the solar cycle in 1607, which may help solve the mystery of the period of minimum solar activity.
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