In 1958, the United States Coast Guard off western Greenland measured the tallest known iceberg at five hundred and fifty feet.

When the Galileo Probe entered Jupiter's atmosphere, it was traveling at a speed of 106,000 miles per hour. This is the fastest impact speed ever achieved by a man-made object.

The Hubble telescope is so powerful that it is like pointing a beam of light at a dime that is two hundred miles away.

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