October 20, 2017

AstroChallenge: Hunting the Vanguards.

Vanguard 1, the “Flying Grapefruit.” (Credit: NASA).

Looking for something new in the realm of satellite hunting? A few weeks ago, a discussion popped up on Twitter for the possibility of spotting an elusive set of targets still in space. In early 1958, the United States orbited the Vanguard 1 spacecraft, the first of a series of three successful launches of Project Vanguard and only the second successful object placed in orbit by the United States following Explorer 1. [Read more...]