• The History and Development of Telescopes

    Telescope makers struggled with lenses for 200 years, then finally were able to make large refractors by the end of the 19th century. Then as the 19th century came to a close, they reached the limit of refractor size. It took several years for them to...
    By George Adcock January 22, 2010 

  • How To Make A Telescope At Home

    Making a telescope at home can be a great learning experience and is tons of fun. Whether you're a solo amateur astronomer or you're looking for a great project to do with your kids, you can build a simple telescope with some basic materials in...
    By Bree E. Underwood November 30, 2009 

  • Amateur Asteroid Hunting: What's Needed and How To Do It

    The idea of hunting for asteroids inspires images of a massive boulder hurtling on a destructive path towards Earth, ready to display its terrifying power and wipe out humankind in the same way the dinosaurs met their end. But you can take part in the...
    By Bree E. Underwood October 30, 2009 

  • What Went Wrong with the Hubble Space Telescope?

    The Hubble Space Telescope was scheduled for a servicing mission in October 2008, but an unexpected equipment failure in space has delayed the trip. Read about what happened to the Hubble and what it means for the servicing mission.
    By Robyn Broyles September 14, 2009 

  • Hubble Space Telescope – The Universal Eye

    What is it that moves at 8 km/second yet keeps an open eye for any happenings in the universe? Well it can be none other than the Hubble Space Telescope. Read about some interesting information about this amazing eye on the universe.
    By Ricky September 10, 2009 

  • LIGO : Einstein's Dream Detector

    In 1916, Einstein predicted the existence of gravitational waves. But at that time we did not have the technology needed to detect them. But LIGO (Laser Interferometer Gravitational-Wave Observatory) may be able to detect gravitational waves....
    By Mushfiq September 10, 2009 

  • The Origins of Radio Astronomy & How Radio Telescopes Work

    Galileo shook scientific world with the invention and breakthrough of the telescope. Equally important in the history of astronomy was the breakthrough of scientific discoveries that led to radio astronomy.
    By Timothysexton September 1, 2009 

  • Radio Astronomy: Major Ground-Based Telescopes, Present and (Near) Future

    Radio astronomy has its star telescopes, just as astronomy in visible wavelengths has the Keck Observatory, the Large Binocular Telescope, or the Hubble Space Telescope to carry its banner. If you've seen "Contact" and remember the Very Large...
    By Sean Fears September 1, 2009 

  • Really, Really Big! Europe's Extremely Large Telescope

    There are large telescopes, and then there are extremely large telescopes. The ELT promises to be larger than any other terrestrial telescope in existence with an incredible 42 meter diameter and the ability to see both in the visible spectrum and the...
    By Sean Fears September 1, 2009 

  • United States Naval Observatory - History and Overview

    The United States Naval Observatory traces its beginnings back to President John Quincy Adams, who signed the legislative act establishing such an entity. Currently the Observatory is one of the premiere institutions in the world for collection and cataloging...
    By johnsinit August 12, 2009 
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