This is Scientific American 60 Secomds, Space. I'm Clara Moskowitz, got a minute?
Every 11 years, the sun's magnetic activity ramps up, sometimes to a frenzy, causing large Right now we should be in the middle of such a solar maximum. But we've yet to see the expected level of activity. In fact, this latest solar max has been a bit of a dud.
太阳活动由太阳大气中的电磁过程引起，时强时弱，平均以11年为周期，活动剧烈期的太阳活动有太阳黑子和耀斑。而现在我们本应该处于一个太阳活动极大期 。但太阳活动并没有我们预期的那样强烈 。甚至于以往的太阳活动极大期相比逊色不少 。
"Compared to say the five or six previous cycles, this is really weak." That's astronomer Sarbani Basu of Yale University, at the 224th meeting of the American Astronomical Society in Boston on June 3rd.
"And then when we went back and started comparing with whatever little data we had of the previous cycles, we realized it may not be that peculiar after all."
We don't really know yet whether the current cycle is the oddball, or if previous cycles were unusually strong. Ground-based telescopes started closely monitoring solar activity only around 60 years ago. And high-quality space-based observations go back just a decade—not even a full solar cycle.
So astronomers are eagerly awaiting what the future can tell us. "It's going to be fun the next few years,I'm looking forward to it."
Thanks for the minute for Scientific American 60 Secomds, Tech. I'm Clara Moskowitz.
1. ramp up 加强，加大； 斜坡上升
The factory don't have that capacity to ramp up.
The solution, Marquardt decided, was to ramp up degree of proportional precision.
2. compare to 把…比作， 喻为； 与…相比
How does this final presidential debate stack up and compare to the others, do you think?
Shakespeare compared the world to a stage.
3. compare with 与…相比；比得上，可与…相比；比较
How does your new house compare with your old one?