CBS News April 8, 2018, 9:20 AM
Almanac: A multitude of sunspots
And now a page from our "Sunday Morning" Almanac: April 8th, 1947, 71 years ago today … a notable SUN day, even though the calendar actually said it was Tuesday.
On April 8, 1947 astronomers at Mt. Wilson Observatory witnessed the largest array of sunspots ever recorded.
Mt. Wilson Observatory/© Carnegie Institution of Washington
The relatively cooler surface areas we call sunspots can be HUGE -- 330 times the size of the Earth in this particular case, and big enough to have been seen from Earth WITHOUT a telescope (with the right protective goggles, of course!).
https://www.cbsnews.com/news/almanac-a-multitude-of-sunspots/
