1 May
2007
1 May
'07
9:22 a.m.
Ann, sunspots can form and dissipate at any time, but- It takes the sun just under a month to rotate once on it's axis, so if you catch the spot as soon as it rotates into view, you have about a two-week period of visibility assuming it doesn't dissipate before it rotates out-of-view. Sometimes they last long enough to come around again. But no guarantees. I keep a small white-light solar telescope in my office and often check the sun at lunchtime, weather permitting. On 5/1/07, Ann Blanchard <a.blanchard@ugs.utah.edu> wrote: How long do sunspots typically stay visible?