A meteoroid is a small rocky or metallic body in outer space. Meteoroids are significantly smaller than asteroids, and range in size from small grains to one-meter-wide objects. Objects smaller than this are classified as micrometeoroids or space dust. Most are fragments from comets or asteroids, whereas others are collision impact debris ejected from bodies such as the Moon or Mars. When a meteoroid, comet, or asteroid enters Earth's atmosphere at a speed typically in excess of 20 km/s, aerodyn
The Jeffersonian Republicans' first newspaper. Partisan politics spurred newspaper growth in the United States from 92 in 1790 to 329 at the end of Thomas Jefferson's presidency. All but 56 were identified with a political party.
Thomas Jefferson. Thomas Jefferson, a spokesman for democracy, was an American Founding Father, the principal author of the Declaration of Independence (1776), and the third President of the United States (1801â1809).efferson succeeded Benjamin Franklin as minister to France in 1785. His sympathy for the French Revolution led him into conflict with Alexander Hamilton when Jefferson was Secretary of State in President Washington's Cabinet. He resigned in 1793.