Analysis of information sources in references of the Wikipedia article "3rd millennium" in English language version.
Launched in 1965 and carrying about 4.5 kilograms of uranium-235, Snap 10A is in a 1,000-year orbit ...
Launched in 1965 and carrying about 4.5 kilograms of uranium-235, Snap 10A is in a 1,000-year orbit ...