Astronomy Disciplines: Astronomy

Astronomy is the scientific study of matter in outer space, especially the positions, dimensions, distribution, motion, composition, energy, and evolution of celestial bodies and phenomena.

 

  • Featured Article

    Calendar, The

    Introduction So familiar has the calendar become that people tend to forget that it, too, had to be invented. Early farmers needed to know when to plow and sow ahead of rainy seasons, and to time...

  • Featured Blog Post

    The Night Sky: November 2008

    The Night Sky in November 2008 By Harry J. Augensen Professor of Physics & Astronomy, Widener University Moon’s Phases in Month   Full "Frost" Moon on the 13thNew Moon on the 27th Stars...

Featured Resource

Ask An Astronomer

"Curious About Astronomy? — Ask an Astronomer"   is run by volunteers in the Astronomy Department at Cornell University. It is featured here in the Cosmos Portal with their kind permission.