Lack of everything- water, air, and sunlight (among others)
Astronomers believe Mars may have once had a more Earth-like environment with liquid water on its surface, based on evidence like dried-up river channels and minerals that form in water. They also think Mars might still have underground water sources or possible microbial life. Additionally, some researchers are investigating the idea of terraforming Mars to make it more hospitable for human colonization in the future.
Some major surface features on Mars include vast volcanoes like Olympus Mons, deep canyons like Valles Marineris, and large impact basins like Hellas Planitia. These features point to a dynamic geological history on the planet.
Here are some major differences:Mars has two moons (Phobos and Deimos) while Earth has one (the Moon).Earth has an atmosphere breathable by humans; Mars does not. (The atmosphere on Mars is almost all carbon dioxide.)Earth has higher gravity than Mars.The deepest canyon on Mars (Valles Marineris) is 4 times as deep and ten times as long as the deepest canyon on Earth (Grand Canyon).Mars has a year of 687 Earth-days.The surface temperature of Mars is much, much colder. Earth is about 57 degrees (F) compared to -87 degrees (F) on Mars.
Major geological features on Mars include Olympus Mons, the largest volcano in the solar system; Valles Marineris, a system of canyons stretching over 4,000 km long; and the Tharsis region, which contains several large volcanoes. Additionally, Mars has vast plains, impact craters, and polar ice caps.
The Mars Rover has explored Mars and "Spirit" is the spacecraft that was sent on November 2011 and is going to Mars.
Yes
His Father, for he didn't want Galileo to major in mathmatics, but to major in medicine instead.
They are high rates of crime & it is major inhibiting factor
Mars does not have large bodies of liquid water on its surface like Earth does. There is evidence to suggest that Mars once had liquid water on its surface in the past, but it has mostly evaporated or frozen over time. Today, any water on Mars exists mostly in the form of ice or vapor.
As of October 13, 2014, there are no further obstacles to the legalization of same-sex marriage in Alaska.
As of October 17, 2104, there are no further obstacles to the legalization of same-sex marriage in Arizona.
As of November 19, 2014, there are no remaining obstacles to the legalization of same-sex marriage in Montana.
As of October 6, 2014, there are no further obstacles to the legalization of same-sex marriage in Wisconsin.
Astronomers believe Mars may have once had a more Earth-like environment with liquid water on its surface, based on evidence like dried-up river channels and minerals that form in water. They also think Mars might still have underground water sources or possible microbial life. Additionally, some researchers are investigating the idea of terraforming Mars to make it more hospitable for human colonization in the future.
As of October 6, 2014, there are no longer any obstacles to the legalization of same-sex marriage in Colorado.
As of October 10, 2014, there are no longer any obstacles to the legalization of same-sex marriage in Idaho.
As of October 6, 2014, there are no longer any obstacles to the legalization of same-sex marriage in Indiana.