Assuming you meant life, that is because there most likely once was. Though they didn't know that for sure then, they thought it a likely possibility because of the conditions of Mars
It was believed to be at the time the 1770 comet.
mars. now tell me why they think that?
Astronomers have long been interested in the possibility of life on Mars because it is one of the most Earth-like planets in our solar system, with conditions that may have been suitable for life in the past. Discovering whether life ever existed on Mars could provide insights into the origins of life on Earth and the potential for life elsewhere in the universe. Additionally, understanding Mars' environmental history can help inform future exploration and the search for habitable conditions beyond our planet.
Mars scientists found water on. Mars
Astronomers concluded that the crust on Mars must be thicker than Earth's crust because Mars lacks tectonic activity like Earth's plate tectonics, which recycles crustal material. This lack of recycling means that Mars's crust has likely accumulated over a longer period, resulting in a thicker crust compared to Earth's crust.
Mars was found in 1534 BC by Egyptian Astronomers.
It was invented by astronomers to help find a chemical in rocks to see is water existed on mars. the date isn't exact, but around 1960-1980.
There is no vegetation on Mars.
Astronomers have not yet made any findings regarding the possibility of life on Mars.
It was believed to be at the time the 1770 comet.
mars. now tell me why they think that?
The reason astronomers were able to photograph the surface of Mars is due to probes, unmanned spacecrafts used for exploration in space.
mars has liquid water on it
Astronomers have long been interested in the possibility of life on Mars because it is one of the most Earth-like planets in our solar system, with conditions that may have been suitable for life in the past. Discovering whether life ever existed on Mars could provide insights into the origins of life on Earth and the potential for life elsewhere in the universe. Additionally, understanding Mars' environmental history can help inform future exploration and the search for habitable conditions beyond our planet.
Mars scientists found water on. Mars
There is no evidence so far that life exists on Mars - or that it ever existed there. Of course, it may have existed - more research is required to be sure.
To learn about space & find out more about Mars.