The National Research Council of Canada's Herzberg Institute of Astrophysics (NRC-HIA) manages Canada's involvement in major astronomical observatories, thereby ensuring Canadian astronomers full access to world-class facilities spanning the entire sky.
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Transit of Mercury
Ken Tapping, November 8, 2006
Mercury is the closest planet to the Sun. It is an airless, rocky ball, looking quite a lot like the Moon. Spacecraft have flown past it, sending us back pictures of mountains and craters. However, there the resemblance ends. Mercury lies two and a half times closer to the Sun than our Earth, which means it intercepts more than six times the solar heat. The surface is hot enough to melt lead.
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