Cowboy Bebop Wiki

Luna was Earth's moon.

In 2021, the Gate Corporation built the first Astral Gate near the moon, however, there were problems during design and construction leading to the Astral Gate accident. It destroyed the surface of the moon and large chunks of it were propelled outward, with much of it heading toward Earth, in the form of rock showers.[1][2][3] Certain pieces of the moon turned into sunstones due to the effects of the exploded gate.[4]