Source of interference

Usage examples of sunspots.

In January of 1612, while still convalescing at the Villa delle Selve outside Florence, Galileo heard much about sunspots from a German gentleman and amateur scientist named Marcus Welser.

Welser would be dead within two years, escaping the pain of his disease through suicide, but meanwhile he worried how Cesi could accomplish the printing of the many meticulous drawings, which Galileo appended to his letters, of sunspots ingeniously observed.

Galileo as the discoverer of wondrous new celestial phenomena but also used his sunspots as a metaphor for dark fears in the hearts of the mighty.

And Galileo, who prided himself on having long since discovered and published everything worth saying about sunspots, presently began to see a new significance in their behavior that could confirm the Copernican world system.

Scheiner, who had foolishly mistaken sunspots for stars before Galileo corrected him, now stood ready to publish this monumental discovery!

Some Aristotelian stalwarts might dredge up the old dismissal of the sunspots as vain illusions of the telescope lenses.

Neither eminence thought the sunspots would disturb the censors, and in fact the book was licensed without incident.

There was this guy Maunder at the end of the last century who claimed that in the late 1600s sunspots almost disappeared for a period of seventy years.

I have read that the Sun may have a steadily ticking internal clock with the irregularities of the sunspots a superficial modification--but what the clock is and why the modification, we do not know.

Frustrated, Mendel retired from investigating heritability and spent the rest of his life growing outstanding vegetables and studying bees, mice, and sunspots, among much else.

Crimson fragments of unknown specialized function flared and raced within, a thousand living sunspots inhabiting a transparent sun.