Planet of Sound was created on 1991-05-28.
Because that's just how God wanted things to be :)
On This Planet was created in 1997.
Lonely Planet was created in 1972.
favor has a long a and planet has a short a sound.
Because space is a Vacuum, there are not enough gas molecules around to transfer the sound waves.
Planet Master was created in 1961.
Cartoon Planet was created in 1995.
Planet Gemini was created in 1997.
Big Planet was created in 1957.
Tin Planet was created in 1997.
Bikini Planet was created in 2000.
The Planet Savers was created in 1962.