Marcia Dunn, reporting for the Associated Press, has an article on the Hubble Space Telescope repairs that are underway. NASA astronauts on the space shuttle Atlantis are in orbit and have secured the space telescope. Now the astronauts can begin to make various repairs the telescope needs after 19 years in orbit. The repairs almost didn’t happen. NASA was going to allow the telescope to fall into disrepair until it had a change of heart in 2006.
To learn more about Hubble, I would recommend Phil Plait’s “Ten Things You Don’t Know About Hubble” at the Bad Astronomy Blog. (For even more geekery, you can follow Astronaut Mike Massimino on Twitter.) Hubble has enabled us to see stars 1/ten billionth as bright as what we can see with the naked eye. This, in turn, has led to scientific break throughs. For example, (per Wikipedia) it has allowed us to calculate the rate of expansion of the universe.
Scientific advances often go hand-in-hand with technological advances. It’s probably no accident that Western science began to take off around the same time as telescopes and microscopes were invented in the late 16th and early 17th centuries. (It also helped that Constantinople was threatened and conquered by the Turks leading to a lot of books and scholars fleeing to the West.) Since then, we’ve been off to the races. The difference between the past 450 years as compared to the 450 years that preceded is staggering. In Europe, the year 1100 probably looked quite a bit like the year 1550. But, clearly a time traveler from 1550 wouldn’t know what to make of the year 2000. The Hubble Space Telescope is part of this process. I’m frankly happy to live in such a time. All too often, it’s easy to lose site of how far humans have progressed –for all our failures– in such a short period of time.