“I'm not saying I'm gonna change the world, but I guarantee that I will spark the brain that will change the world.” That was a quote by Tupac Shakur, a poet, and an inspiration. What does it mean to 'change the world'? Changing the world is the most politically correct term to use, as its literal meaning is the same as its metaphorical one, so there's no confusion. Just by being on Earth, at any given moment, and doing something or even nothing we are already changing the world.
Explanation:
Astronomers have identified more spiral galaxies than ellipticals, but that's simply because the spirals are easier to spot. While spiral galaxies are bright, elliptical galaxies are dim. The existing stars inside an elliptical galaxy tend to be older, giving off more red light than younger stars.
