Category Archives: Astronomy

ISS Transit Photos

Posted on January 4, 2011 by Conrad Halling

Thierry Legault takes amazing photos. On December 20, 2010, Legault obtained a photo of the transit of the International Space Station across the full moon. Today (January 4, 2011) he obtained a photo of the transit of the International Space … Continue reading →

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Cosmic Cataclysms and the Martian Hemispheric Dichotomy

Posted on July 5, 2008 by Conrad Halling

The 26 June 2008 issue of Nature is devoted to cosmic cataclysms, specifically the impacts of asteroids with planets and moons. The issue contains articles about the still-mysterious Tunguska blast, the South Pole–Aitken basin on the Moon, and research into … Continue reading →

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Heating the Sun’s Corona

Posted on February 29, 2008 by Conrad Halling

The temperature at the surface of the sun is 6000 kelvin, but the temperature of the sun’s corona is more than 3,000,000 kelvin. But it is still a mystery how the sun’s corona is heated to such a high temperature. … Continue reading →

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Planetary Observation by Amateur Astronomers

Posted on February 27, 2008 by Conrad Halling

In the 24 January 2008 issue of Nature, Sánchez-Lavega et al. published a paper titled “Depth of a strong jovian jet from a planetary-scale disturbance driven by storms.” The paper reports the results of investigations into the circulation jets in … Continue reading →

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