The last solar maximum occurred in 2001.

上一次的太阳活动峰年出现在2001年。

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So anyone over the age of 11 has already lived through such a solar maximum, with no harm, according to NASA.

因此，11岁以上的人已经经历过这样一个太阳活动峰年，美国宇航局表示不会有任何损害。

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"The sun has woken up and is becoming more active as we approach the solar maximum," expected in 2013, Hesse said.

“太阳已经醒来，并逐步活跃。我们正在不断靠近它最活跃的时期——估计是在2013年。”黑塞说。

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About two years after a solar maximum, the Pacific experiences conditions similar to El Nino the opposite of La Nina.

VOA: special.2009.09.29

These periods of high activity are known as solar maximum.

VOA: special.2009.09.29

He says his team showed the effects of a new process to understand what happens in the Pacific's warm waters where there is a maximum of solar activity.

VOA: special.2009.09.29

"This always happens around the time of solar maximum, " NASA physicist David Hathaway said in a statement.

CNN: Sun flips magnetic field

During solar maximum, the intense magnetic fields that reach above the Sun's surface become tangled, particularly near the sunspots.

BBC: Sun, Trace

Astronomers consider the current solar maximum more powerful than average, but less intense than the last two in 1989 and 1979.

CNN: Sun flips magnetic field