MGIFOS

MGIFOS, or My God It's Full Of Stars, is an esoteric programming language created by User:Marz. While 1L consists of 2 characters (+ and space), MGIFOS consists solely of the character *. Its command set is based on Brainfuck.

Language overview
MGIFOS is displayed by a series of stars (asterisks). The program is defined by the number of asterisks in the code. The commands are concatenated in the order required. For example, to move the pointer to the right and then to the left, the binary would be: 00010010 This in decimal is 18, meaning that the MGIFOS code is 18 stars in a row: ******************

Cat
The cat program ",[.,]" consists of 423272 stars in MGIFOS.

Infinite loop
The program "+[]" consists of exactly 888 stars. Oh lol.

Hello, world!
The program which prints out the words Hello World! consists of (approximately?) 4.5287549098E+168 stars.

It has been noted that there are more stars in the Hello World program than there are particles in the observable universe - but this is just a minor setback.