Luna 2 2" itself. Once "Luna 2" was split from its upper stage it started transmitting information back to Earth using three different transmitters. These transmitters provided precise information on its course, allowing scientists to calculate that "Luna 2" would hit its mark on the Moon around 00:05 on September 14 (Moscow Time). In order to be able to provide a visual from Earth on September 13, the spacecraft released a vapor cloud that would expand to diameter that would be seen by observatories in Alma Ata, Byurakan, Abastumani, Tbilisi, and Stalinabad. This vapor cloud also acted as an experiment to see
Luna 1 first instance of radio communication at the half-million-kilometer distance. A malfunction in the ground-based control system caused an error in the rocket's burntime, and the spacecraft missed the target and flew by the Moon at a distance of 5,900 km at the closest point. "Luna 1" then became the first man-made object to reach heliocentric orbit and was then dubbed a "new planet" and renamed "Mechta" ("Dream"). "Luna 1" was also referred to as the "First Cosmic Rocket", in reference to its achievement of escape velocity. "Luna 1" contained radio equipment including a tracking transmitter and telemetry system, and five