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Weather news
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Readers' photos
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Data from the The Sun's weather station
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2011 stargazers' calendar
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Become a backyard astronomer in five simple steps
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Baltimore Weather Archive
Daily airport weather data for Baltimore from 1948 to today
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National Weather Service:
Sterling Forecast Office
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Capital Weather Gang:
Washington Post weather blog
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CoCoRaHS:
Community Collaborative Rain, Hail and Snow Network. Local observations by volunteers
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Weather Bug:
Webcams across the state
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National Data Buoy Center:
Weather and ocean data from bay and ocean buoys
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U.S. Drought Monitor:
Weekly maps of drought conditions in the U.S.
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USGS Earthquake Hazards Program:
Real-time data on earthquakes
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Water data:
From the USGS, Maryland
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National Hurricane Center
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Air Now:
Government site for air quality information
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NWS Climate Prediction Center:
Long-term and seasonal forecasts
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U.S. Climate at a Glance:
NOAA interactive site for past climate data, national, state and city
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Clear Sky Clock:
Clear sky alerts for stargazers
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NASA TV:
Watch NASA TV
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Hubblesite:
Home page for Hubble Space Telescope
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Heavens Above:
Everything for the backyard stargazer, tailored to your location
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NASA Eclipse Home Page:
Centuries of eclipse predictions
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Cruise Critic: Hurricane Zone:
Check to see how hurricanes may affect your cruise schedule
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Warming World:
NASA explains the science of climate change with articles, videos, “data visualizations,” and space-based imagery.
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What on Earth:
NASA blog on current research at the space agency.
Comments
Question: why isn't the Earth cratered the way the Moon and Mercury seem to be?
Posted by: Hank Stewart | January 16, 2008 4:25 PM
Earth has certainly been bombarded from space just like the moon and Mercury. Many craters, large and small, have been identified around the world, the best known being Meteor Crater in Arizona. But the heaviest bombardment occurred billions of years ago in the early history of the solar system. Most of those craters have long-since been smoothed over by weathering - wind and water - and by the movement of the planet's continental plates over millions of years. Mars, too, has been smoothed over by weathering, but its thin air and scarce water have left the surface looking more heavily cratered than Earth, but less so than airless Mercury.
Posted by: frank roylance | January 16, 2008 5:07 PM