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What evidence do you have that Mars had much more liquid water at its surface in the past than it has today?
They have no solid evidence or proof only theories and hypothesis. That's science of today for you. Teaching things as fact which are still only theories....
There is plenty of very solid evidence that water did exist on Mars and still exists today. There are channels that are cut into the rock by some liquid and we have found ice on the planet. We know that the planet was far warmer at one time, so the only logical conclusion is that water did flow on Mars at one time.
We often teach theories as fact, depending on the level of knowledge we have on the subject. The Theory of Relativity is till a theory. Only the absolute most fool hardy would care to fight that theory though. In only way knowledge ever grows is by teaching what we know and moving forward from that point. The best guess and logic certainly indicates that the ice we found on Mars, at one time did flow.
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To the first answer. Users here ask genuine, technical questions to which they expect serious answers, as the second response gives. We do not want gratuitous attacks on science, by people whose comments clearly show utter ignorance of scientific methods, and do not even see the heavy irony of using the internet to mount those attacks.
What else can I help you with?
Where does water exist on Mars today?
Water on Mars exists primarily in the form of ice, found in polar ice caps, underground ice deposits, and frost on the surface. There is also evidence of briny water flows or seasonal liquid water on the surface in some regions during certain times.
What features on the surface of mars or the moon indicate possible previous existence of liquid water?
evidence of ice.
Dose mars have water in it?
Yes, Mars has water in the form of ice. Scientists have also discovered evidence of liquid water on the surface in the past.
Does mars have oceans like earth?
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.
What makes us think that mars must once have had an atmosphere that was warmer and had higher surface pressure?
Evidence such as dried-up river channels, minerals that form in liquid water, and a thin layer of atmosphere around Mars suggest that it once had a thicker atmosphere and higher surface pressure. Additionally, features like valleys and lake beds further support the idea that Mars may have had a warmer and wetter climate in the past.
Can you find an ocean on mars?
No. While there is evidence of liquid water beneath the surface there are no oceans on Mars.
Where does water exist on Mars today?
Water on Mars exists primarily in the form of ice, found in polar ice caps, underground ice deposits, and frost on the surface. There is also evidence of briny water flows or seasonal liquid water on the surface in some regions during certain times.
What features on the surface of mars or the moon indicate possible previous existence of liquid water?
evidence of ice.
What is evidence shows that Mars may once have had liquid water?
There is evidence of ancient river valleys, lake beds, and mineral deposits on Mars that suggest the presence of liquid water in the past. Additionally, recent discoveries of recurring slope lineae (dark streaks on Mars' surface that appear to flow downhill) suggest the possibility of salty water flowing on the planet today.
Dose mars have water in it?
Yes, Mars has water in the form of ice. Scientists have also discovered evidence of liquid water on the surface in the past.
Does mars have oceans like earth?
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.
Where is the liquid water on the Moon?
There is no liquid water on the moon. There is some evidence that there is frozen water.
What evidence suggests that liquid water is or once was present on mars?
There is evidence that there was once water on Mars due to large gullies on its surface. This may suggest that running liquid water may have eroded it away and the fact that Mars has 'frozen' ice caps may suggest that it was once liquid water that had frozen over a large period of time.
Does earth's moon have a hydrosphere?
No, Earth's moon does not have a hydrosphere. There is no evidence of liquid water on the moon's surface.
What makes us think that mars must once have had an atmosphere that was warmer and had higher surface pressure?
Evidence such as dried-up river channels, minerals that form in liquid water, and a thin layer of atmosphere around Mars suggest that it once had a thicker atmosphere and higher surface pressure. Additionally, features like valleys and lake beds further support the idea that Mars may have had a warmer and wetter climate in the past.
Which planet doesn't contain liquid water?
None of the planets in our solar system except Earth are thought to have surface liquid water in any considerable amount. Some planets are known to have water ice or atmospheric water vapor; some moons of Saturn and Jupiter (which are not planets) show evidence of having sub-surface oceans of liquid water owing to tidal heating effects; other planets including Mars and Venus (both of which were thought to have significant amounts of surface water in their history) continue to be studied for the possibility of liquid water below the surface.
What planet has liquid water?
A moon called Titan, orbiting Saturn, has liquid methane, but on Earth its a gas. Also, under a moons surface, orditing Jupiter and know as Europa, there is scientific evidence that there is a sea, which has a posability of sustaining life, so we aren't the only ones in the solar system.
