Purple bacteria that thrive in low-energy red or infrared light with a simpler method of photosynthesis could cover another ...

Exactly how different is hard to know, but our own planet can still offer us some ... thrive in low-light conditions tend to be colored purple to make the most of infrared radiation.

There may be trillions of other planets in our galaxy, the Milky Way (which itself ... world is shown as one of seven colors. For example, purple circles show a planet found by its transit ...