1, They are probably produced by variations in sunspot activity.

2, Studies link the drought to a sunspot cycle not due to end until the millennium.

3, It also shows a clear relationship with sunspot activity; by and large there are fewer sunspots when the Sun is bigger.

4, These faculae frequently are the forerunners of sunspot formation.

5, We observe three sunspot groups on the disc.

6, The darkest region of a sunspot.

7, The green coronal line above sunspot group of No. 5629 of 5 Agu.

8, When sunspot numbers drop at the end of each 11-year cycle, solar storms die down and all becomes much calmer.

9, A few weeks ago, one small candidate reverse sunspot was sited but faded quickly.

10, Shrinks the sunspot the bridge, the ship, the human, is moving slowly, all not anxious appearance.

11, Recently, the sunspot activity is relatively low while the sun in a quiet period for extravehicular astronauts to walk.

12, The above sunspot spot, all is the sadness which you gives!

13, Here a white sunspot shoots out giant magentic spikes into space.

14, They also wondered whether this cessation of sunspot activity indicates an upcoming return of the Maunder Minimum(), a 70-year sunspot drought seen from 1645-1715.

15, The broadcast was snapped for a few seconds by the sunspot activity.

16, Scientists are concerned that a special event, such as a sunspot or supernova might occur during this long period of communications blackout.

17, Besides, we have commented the Maunder Minimum and concluded that it is incorrect inference for lack of sufficient sunspot records.

18, This includes the continuous survey of umbra and penumbra of the sunspot.

19, There is evidence that aspects of weather and climate are also synchronized with sunspot activity.

20, The South China Sea monsoon bursts earlier, the formation and landing numbers of tropical cyclones are less and their active time is shorter in the peak year of sunspot.

21, In this paper, we have studied the radiation mechanism of the SVC for a unipolar sunspot—the combined radiation mechanism consisting of bremsstrahlung and cyclotron resonance radiation mechanism.

22, Three studies, presented at a meeting of the American Astronomical Society's solar physics division, all point towards declining sunspot activity into the next decade.

23, A bright and hot area in the sun's chromosphere,(http:///sunspot.html) usually associated with a sunspot.

24, A bright and intensely hot area in the sun's chromosphere, usually associated with a sunspot.

25, In this paper, the form of umbral dots of sunspot was satisfactorily explained by a mechanism of local perturbations in a magnetic tube of sunspot along with the theory of Petschek's neutral sheet.