A skin abscess is a localized collection of pus that generally develops in response to infection or to the presence of other foreign materials under the skin. An abscess is typically painful, and it appears as a swollen area that is warm to the touch. The skin surrounding an abscess often appears pink or red.
Instead, a piece of space debris moving at more than 20,000 miles per hour nearly wiped out the station and its six-member crew. Tuesday marked the second time that crew members took refuge in Soyuz âlifeboatâ capsules. There was a near miss with a satellite motor in 2009.here are more than 20,000 pieces of space junk that measure larger than a softball, and these are tracked by the Department of Defense. Together, both NASA and DoD use ground-based sensors to survey each objectâs orbit. However, there are many millions of smaller discards that cannot be tracked.
Astronauts are by far the fastest traveling humans with the earth as a stationary reference point. One might think the Apollo missions to the moon are the fastest traveling humans, but the speed of that spacecraft was only about 6,300 miles per hour. In fact, an orbiting space shuttle is much faster at 17,600 miles per hour. This is the fastest any man has reached. Although it seems very fast to us, this speed is 0.026% of the speed of light. For unassisted speed using Usain Bolt's time in the 100 meter, his top speed is 23.3 miles per hour (10.4 m/s).