A dwarf planet is a planetary-mass object that is neither a planet nor a natural satellite. That is, it is in direct orbit of a star, and is massive enough for its gravity to crush it into a hydrostatically equilibrious shape, but has not cleared the neighborhood of other material around its orbit. The term dwarf planet was adopted in 2006 as part of a three-way categorization of bodies orbiting the Sun, brought about by an increase in discoveries of objects farther away from the Sun than Neptun
Quick Answer. According to the U.S. Postal Service, the price of a first-class postage stamp in the United States is 49 cents as of June 2014. This rate applies to standard-sized mail weighing 1 ounce or less. Letters weighing more than 1 ounce cost an additional 21 cents to mail.
Stamp prices going up 2 cents to 44 cents in May. The post office will get an extra 2 cents worth when you mail a letter starting in May. The U.S. Postal Service announced today that the price of a first-class stamp will rise to 44 cents on May 11.