This is why Mars is so much smaller than Earth

The inner planets of our solar system, Mercury, Venus, Earth, and Mars, are all similar in some ways. They are rocky planets with a firm sur...

The inner planets of our solar system, Mercury, Venus, Earth, and Mars, are all similar in some ways. They are rocky planets with a firm surface like Earth’s, and they are much smaller than the gas giants Jupiter and Saturn. But they differ in many ways too, in terms of their size, mass, and atmospheres. To understand the conditions on … Continue reading

from SlashGear https://ift.tt/30AVLEw
via IFTTT