Ranger 2 was a flight test of the Ranger spacecraft system of the NASA Ranger program designed for future lunar and interplanetary missions. Ranger 2 was designed to test several systems for future exploration and to conduct scientific observations of cosmic rays, magnetic fields, radiation, dust particles, and a possible hydrogen gas "tail" trailing the Earth. Ranger 2 was of the Ranger Block 1 design and was almost identical to Ranger 1. The spacecraft consisted of a hexagonal base 1.5 metres (4 ft 11 in) across, upon which was mounted a cone-shaped 4-meter-high (13-foot) tower of aluminum struts and braces. Two solar panel wings measuring 5.2 metres (17 ft) from tip to tip extended from the base.

Wikipedia: https://en.wikipedia.org/wiki/Ranger_2. Related NASA reference: https://science.nasa.gov/mission/ranger-2/. Description adapted from Wikipedia contributors (CC BY-SA 4.0; https://creativecommons.org/licenses/by-sa/4.0/).