Why do scientists think that mars may have had liquid water on it at one time?

Answer 1

because it is in the goldilocks zone(habitable zone)

and they had a theory that mars had life MANY MANY MANY MANY yrs ago except that its gravity did not hold

Giant flood channels and tree-like networks of tributaries have been found on Mars. Furthermore, specific minerals such as hematite and goethite have been found, both of which sometimes form in the presence of water. Jarosite has also been found by the Opportunity lander in 2004 - this only forms in acidic water, confirming that water must have been around in the past.

Answer 2

There are several reasons for this belief. One is the formation of microscopic rocks on the surface, which is usually an indicator. There are also grooves on the planets surface that appear to be dried up river beds. Also, the planet used to be much warmer. There are polar ice caps just like on Earth. It is believed there is enough ice in these caps to cover the entire planet of Mars in 11 meters of water if they were to be melted.

Answer 3

Scientests discovered elements and formations on the surface of mars pointing to a simple awnser, that at one point there was flowing liquid water on the surface of mars. there is water on mars, but it is all frozen in the dirt or frozen at the ice caps of mars.

Answer 4

Mainly because they have found dried up channels and riverbeds that look like they were formed by water as well as the discovery of a mineral on the surface that only forms in the presence of liquid water.

Answer 5

because it is in the goldilocks zone(habitable zone)

and they had a theory that mars had life MANY MANY MANY MANY yrs ago except that its gravity did not hold

Giant flood channels and tree-like networks of tributaries have been found on Mars. Furthermore, specific minerals such as hematite and goethite have been found, both of which sometimes form in the presence of water. Jarosite has also been found by the Opportunity lander in 2004 - this only forms in acidic water, confirming that water must have been around in the past.

Answer 6

Scientists have observed geological features on Mars, such as dry river valleys and sedimentary rocks, which suggest the presence of liquid water in the past. Additionally, the detection of minerals that form in the presence of water and the identification of ancient lake beds further support the idea that Mars had liquid water in its distant history.

Answer 7

the telescope has showed them a stream of water