A star-forming region in the Large Magellanic Cloud, an irregular galaxy. Astronomy (from Greek: á¼ÏÏÏÎ¿Î½Î¿Î¼Î¯Î±) is a natural science that studies celestial objects and phenomena. It applies mathematics, physics, and chemistry, in an effort to explain the origin of those objects and phenomena and their evolution.
2015-02-25T12:30:07-05:00. A former pro-US leader in Iran was Shah Mohammed Reza Pahlavi. HIs regime was overthrown in 1979 by the Islamic Revolution and Ayatollah Khomeini came to power. Comments
US-Iranian relations became strained when a group of Iranian students seized the US Embassy in Tehran in November 1979 and held embassy personnel hostages until mid-January 1981. The US cut off diplomatic relations with Iran in April 1980. During the period 1980-88, Iran fought a bloody, indecisive war with Iraq that eventually expanded into the Persian Gulf and led to clashes between US Navy and Iranian military forces.