Some articles offer their own windows into history.
Some articles offer their own windows into history. The 1957 launch of Sputnik sent amateur scientists outside looking for satellites, and the disk gives you the details of how it was done. The columns are readable with Netscape 4.0 or Internet Explorer 3.0 or higher. The interface isn't elegant, but it's functional. The diagrams generally are illegibly small on screen, but a click will show you a blown-up version that is easy to read.