• Possibilities for Earth Impact Events: Comets, Asteroids, Meteoroids

    From history we know that the Comet Shoemaker-Levy 9 collided with Jupiter in 1994. It was the first planetary comet collision observed by scientists. It raised many questions about what would happen if a comet collided with Earth again.
    By vancepreed September 28, 2011 

  • What Are Elliptical Galaxies?

    Elliptical galaxies. While describing the simple shape of a galaxy doesn't seem to tell you much, you'd be surprised by the amount of information that astronomers have gleaned based on their form! This article discusses the origin of elliptical...
    By allychevalier September 28, 2011 

  • Gallery Across the Cosmos - Striking Galaxy Images

    The Universe is incredibly large. Vast empty stretches of space are dotted with a wide array of galaxies -- huge cities of stars, each containing hundreds of billions of suns. Take a look at some of the most visually striking and profound galactic images...
    By Rod Martin, Jr. September 27, 2011 

  • Juno--The New Jupiter Probe

    On August 5, Juno began a five year flight to Jupiter. On arrival, it will spend a year making measurements of the gas giant’s magnetic, gravity and radiation fields. It will measure the water in the atmosphere and other atmospheric components....
    By George Adcock August 31, 2011 

  • Understanding the H II Region

    Clouds of ionized hydrogen are commonly found in spiral and irregular galaxies. These fascinating regions in space consist of thousands of stars. Find out what they are, how they are formed and what their eventual fate is.
    By Nick Oza August 28, 2011 

  • Ancient Mesopotamian Beliefs About Astronomy

    Astronomy in Ancient Mesopotamia was as much a mixture of religion and astrology as it was a science, but its methods had a significant influence on later Western astronomers.
    By Wendy A.M. Prosser August 27, 2011 

  • Mysteries of Our Solar System: What Lies Beyond Neptune?

    Beyond Neptune lie mysteries that astound astronomers. There was once a ninth planet. Now there is not. It instead is a part of a strange belt of similar objects on the edge of the solar system. Why was Pluto demoted as a Planet?
    By George Adcock August 14, 2011 

  • The First Professional Astronomer, George Airy

    You could be forgiven for thinking that the 1st Astronomer Royal, John Flamsteed (1675-1719), was the first professional astronomer. In fact 160 years had to pass before the world's first truly professional star gazer appeared on the scene...
    By PhilBagnall August 14, 2011 

  • Facts on a Beautiful, Yet Unknown Uranian Moon

    Titania is one of the largest and most distant moons of our Solar System. Its existence arouses mystery and wonder since no specific mission has ever studied this beautiful and largest moon of Uranus and very little is known about it.
    By Aggeliki K. August 14, 2011 

  • Exploring the Universe with Extragalactic Astronomy

    How much do we know about the Universe beyond our own galaxy? What can astronomy tell us about black holes, quasars and the origins of the Universe?
    By Hannah Whiteoak August 12, 2011 
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