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
Mega Man 2 series were defined by the first game, but "Mega Man 2" added crucial conventions that were retained for the rest of the series. The traditional number of Robot Masters for the series is eight as used in "Mega Man 2", rather than the six used in the original. It was the first in the series to include an opening cinematic. "Mega Man 2" also introduced the Energy Tank item, special movement items, teleporter room, and password system, which became staples in future games. The Energy Tank became the series' iconic health refill item and later served as inspiration for a