Glyphs - what do they mean?

There are two meanings that have been put forth, neither of which have been confirmed by Jared Leto or anyone else in the band, but are still good places to start.

The first explanation is that the four glyphs represent the four terrestrial planets, Mercury, Venus, Earth, and Mars.

First glyph: two intertwined M's, meaning mercury; second glyph: seems to be rotating in the opposite direction, and Venus rotates in the opposite direction from all the other terrestrial planets; third glyph: Roman numeral three, and Earth is the third planet from the sun; and fourth glyph: two dots around a bigger circle, which could be Mars and its two moons.

The second explanation is that the four glyphs stand for the bands name.

First glyph: two intertwined threes, representing 30; second glyph: rotating in the opposite direction, almost as if counting down, representing seconds; third glyph: if you look between the lines, you get two white lines, representing 'to'; and fourth glyph: the same explanation for Mars.