A Quote by Sir Martin Rees, Astronomer Royal of Great Britain



Telescopes are in some ways like time machines...
They reveal galaxies so far away that their light has taken billions of years to reach us. We in astronomy have an advantage in studying the universe, in that we can actually see the past. We owe our existence to stars, because they make the atoms of which we are formed. So if you are romantic you can say we are literally starstuff. If you're less romantic you can say we're the nuclear waste from the fuel that makes stars shine. We've made so many advances in our understanding. A few centuries ago, the pioneer navigators learnt the size and shape of our Earth, and the layout of the continents. We are now just learning the dimensions and ingredients of our entire cosmoc, and can at last make some sense of our cosmic habitat.



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Thursday, March 19, 2009

First of three Spacewalks

While I am here, writing my blog, astronauts Steve Swanson and Richardson Arnold are on the 1st of 3 spacewalks to install the S6 truss on the ISS. The main purpose of this spacewalk is to perform a number of tasks to help install the S6 truss. Once both the space walking astronauts are in place, Koichi Wakata and John Phillips will operate the stations robotic arm to carefully move S6 to the side of the already installed S5 truss. This space walk is expected to last 6.5 hrs. Man! What an experience.
Courtesy: www.nasa.gov

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