287K views · 1.5K reactions | Get to know the story of Hisako Koyama, whose drawings of the sun’s surface helped scientists reconstruct 400 years of sunspot activity: | TED-Ed | Facebook

8.4K views · 442 reactions | What color is the Sun – white, yellow, orange, red? NASA's Solar Dynamics Observatory observes the Sun in many wavelengths because they convey unique information about the Sun's surface and atmosphere. Scientists use these differently colored images to paint a full picture of our constantly changing and varying star. | NASA Space Alerts | Facebook