: any of the dark spots that appear at times on the sun's surface and are usually visible only through a telescope
Example Sentences
Recent Examples on the WebGeiger said the Farmers’ Almanac makes its predictions based on a formula that includes sunspot activity, moon phases, and the position of the planets. Zachary Smith, cleveland, 24 Aug. 2022 Essentially, the formula uses sunspot activity and the effect the moon has on the earth to be able to predict weather about two years in advance. Sam Burdette, The Arizona Republic, 16 Aug. 2022 Nestor Espinoza, an astronomer at the institute, is showing off a crisp new graph — trust me, still charismatic — of a gas giant planet crossing in front of not just a star, but a sunspot on that star.New York Times, 12 July 2022 The sunspot, named AR3055, measures more than 6,100 miles wide. Joshua Hawkins, BGR, 13 July 2022 Solar researchers spotted a massive sunspot pointed towards Earth. Joshua Hawkins, BGR, 13 July 2022 This provided us with proper images of the sunspot that erupted over the weekend. Joshua Hawkins, BGR, 28 June 2022 The average sunspot is the size of our planet, according to Newsweek. Sarah Raza, Detroit Free Press, 21 June 2022 The solar flare video showcases a growing sunspot known as AR3032. Joshua Hawkins, BGR, 20 June 2022 See More