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.
Celestial equator-the imaginary line encircling the sky midway between the two celestial poles. Celestial poles-the imaginary points on the sky where Earth 's rotation axis, extended infinitely, would touch the imaginary celestial sphere ...t's anchored to the celestial poles and the ~ (directly above Earth 's equator). Declination and right ascension are the celestial equivalents of latitude and longitude. Declination-Similar to latitude on the Earth 's surface. The distance in degrees north or south of the ~ (similar to the Earth 's Equator).