ADHD is the most common problem seen in outpatient child and adolescent mental health settings. It is estimated that ADHD affects about 5% of children. Boys are diagnosed with ADHD about twice as much as girls. About 2.5% of adults have ADHD.
Report Abuse. The Milky Way, BY FAR! To give you an idea of size: Our sun, the next biggest celestial object on your list, is about 870,000 miles in diameter. The Milky Way's diameter is about 600,000, 000, 000,000 ,000 miles in diameter!Or in more practical terms: If the sun were the size of a large pin-head, the Milky Way would extend from the Earth to nearly twice the distance to the moon. screaming monk Â· 8 years ago.he Milky Way's diameter is about 600,000, 000, 000,000 ,000 miles in diameter! Or in more practical terms: If the sun were the size of a large pin-head, the Milky Way would extend from the Earth to nearly twice the distance to the moon. screaming monk Â· 8 years ago.
VY Canis Majoris is the largest star known to man. It is a red Hypergiant, located in the Milky way and measuring between 1800 to 2100 solar radii.One Radius is equal to the current radius of the Sun and it is approximately 432,450 miles (695,500 kilometers).VY Canis Majoris is so large that if our Sun were replaced by it, its surface would extend to (or maybe even pass) the orbit of Saturn.In Earth terms it would take 70 000 000 000 000 000 (70 quadrillion) Earths to fill up the VY Canis Majoris. rn. 1  Facebook.Y Canis Majoris is the largest star known to man. It is a red Hypergiant, located in the Milky way and measuring between 1800 to 2100 solar radii.