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.
Astromeda is a galaxy we could see with a telescope. Andromeda is a galaxy that is very similar to our own, a spiral galaxy and the most distant object that can be seen by th â¦ e naked eye. It is a sister galaxy and part of the local group. Although the Andromeda Galaxy is a bit larger than the Milky Way, and is large as spiral galaxies go, it is not the largest galaxy. There are larger spiral galaxies, an â¦ d much, MUCH larger elliptical galaxies.