953 nut 64,398 #1 Posted yesterday at 12:25 PM March 17,1958, The US Naval Research Laboratory launches Vanguard I, an aluminum sphere about the size of a cantaloupe, into orbit. The first satellite to use solar cell power, it has become the longest remaining human-made object in space. 2 6 Share this post Link to post Share on other sites
Beap52 2,069 #2 Posted 15 hours ago As usual, these "betcha didn't know" posts caused me to did a little deeper into the subject. From today's reading it was expected to orbit for two thousand years but due to unexpected drag (and some other scientific calculations), it will re-enter our earth's atmosphere after 240 years. Very Interesting. 1 2 Share this post Link to post Share on other sites
