Recent research by planetary scientists Emily Simpson and Howard Chen from the Florida Institute of Technology explores how this hypothetical ... pretty big planet, our inner Solar System would ...

The relative size of the inner planets of our solar system: Mercury, Venus, Earth and Mars. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert!

The inner four planets (Mercury, Venus, Earth, and Mars) are rocky and have solid surfaces that can be walked on. When the solar system formed, rocks (and other dense, heavy materials in the dust ...