Perseid Meteor Shower Tonight
August 12, 2010 by Post Team
Perseid Meteor Shower Tonight, The Perseid meteor shower peaks tonight, promising dazzling display fireball so sky watchers, but the rain cosmic space rock has not endangered the astronauts of the space station during their spacewalk repairs this week , a NASA scientist says. In fact, the meteor shower can give astronauts a show too.
The astronomer Bill Cooke, a meteor expert with NASA’s Meteoroid Environments Office, said the Perseid meteor shower adds a small amount of risk to astronauts on spacewalks (around 15 percent), but the odds of being beaten by a small meteor shower is scarce.
“The risk is still lower than the risk posed by orbital debris and other factors,” Cooke told SPACE.com of the Marshall Space Flight Center in Huntsville, Alabama
Currently, there is a 1-in-300 chance of a piece of orbital debris damage to space station astronaut or hitting a spacewalk. Compared to that, the slight increased risk of the shower is negligible.
A meteorite of about 1 millimeter in size is large enough to damage an astronaut’s spacesuit during a spacewalk, said Cooke. But NASA planners take spacewalk micrometeorites environment into account when scheduling trips, he said.
There are six astronauts living aboard the International Space Station, three Americans and three Russians.
The crew is in the midst of a difficult set of four spacewalks to repair the cooling system of the space station. One of the two ammonia coolant pumps vital 31 to July and station astronauts are fighting hard work to replace part of the oven the size of a spare. Spacewalks conducted Saturday through Wednesday, with the next scheduled for Monday.
If you’re lucky space station astronauts may be able to see meteors from above as you soar 220 miles (354 kilometers) above Earth’s night side. In the past, astronauts have been able to record video from meteorites from space during shuttle missions.
“You can definitely see the meteors, and it’s kind of cool,” said Cooke.
This sky map shows where to look to see the meteor shower. Sky watchers on Earth can use planet SPACE.com ‘s alignment chart to find and identify the planets appear together in the same time as the meteor shower.
During the Perseid meteor shower, the Earth is thrown by the remains of comet Swift-Tuttle when the planet passes near the comet’s orbit. Material left by the sheep committed in the Earth’s atmosphere during the pass at about 37 miles per second (60 km / second), the creation of an annual exhibition of “shooting stars” every mid-August.
One of the reasons why the Persians did not post a significant risk to the astronauts on the space station because, astronomically speaking, the astronauts are rather small, “said Cooke.
“When you look up in the sky, is about 10,000 square kilometers,” said Cooke. “An astronaut surface area is approximately 1 square meter, which is not too big a target.”
The space station is also small compared with the entire night sky, said Cooke. Still, the 100 billion and the International Space Station is the largest spacecraft built in each area and has a main truss, as long as a football field. You can easily outshine Venus on a clear night and be seen by the human eye.
Cooke plans to stay up all night the night to observe the peak of the Perseid meteor shower. The Marshall Space Flight Center intends to hear views live and their all-sky cameras in Alabama and Georgia over the Internet, he added.
“It is the first of the NASA-all night,” he said.
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