Japan Game Index

Real Space 2
It is a space shooting game that exterminates enemies who plot to destroy your empire.
---
It is all azimuth shooting game that can be shot 360 times anywhere.
It is comparatively easy to apply the aim because it is displayed in the lower right of the screen by the color with red position of the enemy.

< expansion of the universe >
It is understood that space keeps expanding. Edwin Hubble observed the retreat speed of the Milky Way in the distance in 1929, and it was discovered to go away from the earth at a speed big like the Milky Way where the distance was long (Hubble's law).

On the other hand, general theory of relativity was announced by Alberto Einstein in 1915 that preceded this, and gravity place equation (Einstein equation) that described the relations between energy and empty Kyocrits was found.

It was shown that both of these solutions space expanded at time (Or, shrink) though the solution of the Einstein equation that received this, and filled the cosmological principle that space was a person such as the same was led by Einstein and Willem Do Gettar, Alexandre Friedman, and Georges Lemaitre.

At first, the cosmic expansion was discovered by Hubble back observing it, and the concept of expanding universe was established of Einstein though the constant (cosmic constant) was added to the solution that I found because it was thought that space was regular and space had been made to become regularly.