Mercury, Venus, Earth, and Mars.

Image via Wikipedia

these are the inner planets of our solar system. Mercury being the closest to the sun (that big bright yellow thing you see when you go outside in the daytime) and Mars being the farthest away.

Mars is a planet that is covered in rusted iron dust. that’s why it gives off that reddish look to it. it has often been suggested that there was once life on this now dead planet, which if I’m not mistaken, is true. just not in the way that it is usually thought of. microscopic life has been found on Mars in frozen water on the planet.

Earth is a planet covered mostly by water. it is where we live. it was once home to many more species of animals, but most species have died off in the past 200 million years due to different reasons. this is the only planet that we know of that contains humanoid life. this planet is also the basis for our time system.

Venus is a planet that is covered by acid rain. it was once believed to be a beautiful planet, much like Earth, but that has since been disproven by scientists. it was however, proven to have once been a “twin sister” planet to Earth, but it turned into the unbearably hot acid rain prone planet it is today because of it being closer to the sun.

Mercury is a planet that is covered by a rocky substance like the land we find on Earth. it has surface temperatures ranging from about 90 to 700 K (−183 °C to 427 °C, −297 °F to 801 °F) it has an iron core (much like Earth as well) it looks very similar to the moon. there are two geologically distinct plains regions on Mercury. gently rolling, hilly plains in the regions between craters are Mercury’s oldest visible surfaces and smooth plains are widespread flat areas which fill depressions of various sizes and bear a strong resemblance to the lunar maria.