A massive sunspot has been spotted on our sun that looks directly at Earth The sunspot doubled in size over just a 24-hour period Experts say it could possibly send out medium-class flares in the near future. A dark sunspot that is facing directly toward Earth doubled in size in just a 24-hour period and could possibly send out medium-class flares in the near future. Tony Phillips, the author of SpaceWeather.com, wrote on Wednesday: ‘Yesterday, sunspot AR3038 was big. Today, it's enormous.’ And it is now said to measure three times the size of Earth.