You are hereArchive - Jun 23, 2008
Archive - Jun 23, 2008
Stunning: the Earth and Moon hang in space as seen from Mars. Images: NASA's discovery of water ice on Mars. What’s next?
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The announcement by NASA of the discovery of water ice on Mars by its Phoenix Lander probe made big news everywhere. The discovery involved the observation of water ice sublimating into the air - that is, the water went from solid to vapor state without reaching the liquid stage. The Martian atmosphere has perfect conditions for sublimation - extremely thin, dry and cold. How cold? Well, you can check the Live Martian Weather Report, with data from a station on board the Phoenix Lander.
What more do we know about Mars' atmosphere? It's hundreds of times thinner than Earth's atmosphere and is made of 95% carbon dioxide, 3% nitrogen, 1.6% argon, and contains traces of oxygen, water, and methane. We also know, from observations that it can support dust storms, dust devils, clouds and gusty winds. With an amazing number of six current live probes exploring Mars (two rovers, a lander, and three orbiters), there are many thousands of images available. Only a few, however show atmospheric phenomena. Presented here are some of the best images of Martian atmosphere (and beyond) in action. read more »
Joke - Recently, our 19-year-old daughter started hunting for her first real job...
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Recently, our 19-year-old daughter started hunting for her first real job. She spent an afternoon filling out application forms, leaving them on the kitchen table to finish later. As I walked by, a section of the application on top jumped out at me. Under “Previous Employment” she wrote, “Baby Sitting.” In answer to “Reason for Leaving,” she replied, “Parents came home.”
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A rabbi, a priest, and a minister walk into a bar. The bartender looks up and says, “Is this some kind of joke?”
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A guy shows up late for work. The boss yells, "You should've been here at 8:30!"
The guy replies, "Why? What happened at 8:30?"
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Original Source: Reader’s Digest
