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The IYA2009 logo International Year of Astronomy commemorative coin. The International Year of Astronomy (IYA2009) was a year-long celebration of astronomy that took place in 2009 to coincide with the 400th anniversary of the first recorded astronomical observations with a telescope by Galileo Galilei and the publication of Johannes Kepler's Astronomia nova in the 17th century. [1]
2009 was a common year starting on Thursday of the Gregorian calendar, the 2009th year of the Common Era (CE) and Anno Domini (AD) designations, the 9th year of the 3rd millennium and the 21st century, and the 10th and last year of the 2000s decade.
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1 January: Beginning of International Year of Astronomy: 3 January: Quadrantids peak : 4 January, 14:00: Mercury at maximum eastern elongation: 4 January, 14:00: Earth at perihelion: 10 January, 11:00
Since new months of the civil calendar were declared by observing the crescent moon, the calendar months could not drift from the synodic month. On the other hand, since the length of a calendar year was handled by the Metonic cycle starting after 499 BCE, there is some inherent drift present in the formulaic computation of the new year when ...
Spring can pose difficulties for stargazers across North America, as it is one of the cloudiest times of the year. However, when clouds break and clear conditions Mark your calendars: March is ...
The year 2009 involved numerous significant scientific events and discoveries, some of which are listed below. 2009 was designated the International Year of Astronomy by the United Nations. [ 1 ] Events, discoveries and inventions