In 2007, researchers at the University of CaliforniaâDavis determined that our Solar System was fully formed at 4.568 billion years ago. They did this by determining the age of stony materials from the asteroid belt.
When to see a doctor. See your doctor immediately if you experience the signs and symptoms of migraine with aura, such as temporary vision loss or floating spots or zigzag lines in your field of vision. Your doctor will need to rule out more-serious conditions, such as a stroke or retinal tear.
Sunburn causes a reddened, irritated area of skin caused by overexposure to the sun's rays or other UV light. Migraine headache (adult) Migraines are a common type of headache that can cause severe pain, aura or flashes in vision, and tingling. Nearsightedness. Nearsightedness is a common eye problem that causes blurry, distant vision. Depression (Adult)