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.
The Constitution and Slavery. We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness. Thomas Jefferson presented the Declaration of Independence to the Continental Congress in 1776. When the American colonies broke from England, the Continental Congress asked Thomas Jefferson to write the Declaration of Independence. In the declaration, Jefferson expressed American grievances and explained why the colonists were breaking away.