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Hubble space telescope's odometer to turn over 100,000 orbits on August 11
Washington | August 05, 2008 1:14:13 PM IST
 

The odometer on NASA's Hubble Space Telescope is about to turn over 100,000 orbits on August 11th.

Launched on April 24, 1990, Hubble zooms along at nearly five miles per second to remain in orbit. So, Hubble's actual odometer mileage is approximately 2.72 billion miles, the equivalent of 5,700 round trips to the Moon.

That's not bad considering Hubble doesn't use fuel of any kind, only Earth's gravity to maintain it in a circular orbit.

Although Hubble doesn't require fuel, it is similar to cars and other vehicles in that it does have wear and tear, and needs servicing and upgrading from time to time.

It's dinged by micrometeorite impacts, and sunlight and temperature extremes degrade its silvery thermal insulating material.

The telescope will get another tune-up in October when astronauts aboard the space shuttle Atlantis make one final mechanic's check to replace worn components and install spanking new instruments to extend Hubble's vision.

When Hubble's odometer completes 100,000 orbits, at that time, the spacecraft will be moving northward as it crosses the intersection point where its orbit passes directly over Earth's equator. (ANI)

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