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
Karim Sadjadpour. 1  Ayatollah Ali Khamenei is Iranâs most powerful official. 2  Khamenei has been Iranâs supreme leader since 1989, making him the second longest serving autocrat in the Middle East (after Omanâs Sultan Qaboos) as well as the second longest-serving Iranian leader of the last century, after Shah Mohammed Reza Pahlavi.