Throughout our solar system there are multiple planets that are compatible for life. One of which is Mars. It has been recently discovered that this small planet has canals of water flowing beneath its outer crust. However, Mars lacks a magnetic field. Although Mars lacks a magnetic field, it has an oxygen atmosphere consisting of 95% carbon dioxide, 3% nitrogen, and 2% argon. With these traits, Mars holds life, and it has been discovered that there is a great amount of methane.
Its entirely possible that life can be found on other planets, one of which is a moon of Jupiter known as Europa. Europa is located close to the other five planets of Galilei. It is believed that life can very well be located on Europa, this is very possible due to its oxygen atmosphere.

Space is measured through three units known as kilometers (km), astronomical units (AU), and light years (ly). Space is measured in kilometers when the space can be measured in miles, or a smaller unit. When using astronomical units, the distance is determined by the distance between Sun and Earth. However, a light year is the largest unit, used only to determine sizes of spaces larger than astronomical units.

Earth and Mars are separated by a short 54.6 million kilometers. To travel between these two planets it would take roughly 1,100,000 hours. Despite this long distance, humans have succeeded after multiple decades in traveling to mars, and have been able to observe its incredible heat, small size, and barren outer crust.

Mercury's Size

The size of Mercury and the sun's bodies deeply contrast. Mercury boasts a small 4879.4 km where as the sun has a monstrous diameter of 1,391,000 km. Mercury can fit into the sun approximately 21,254,000 times.