Earth is not round,but Mars is?

Question

If you took all the water off the earth the Earth would look like a deformed "Potatoe". So why does mars look so round if it once was Earths twin?Is mars bigger than planet Earth,excluding Earths water?

Answer 1

You are totally wrong on all counts. You are obviously guessing.

The oceans on Earth average about 3 kms deep, while the Earth is 13800 kms in diameter. So, the Earth from space is as near smooth as you could imagine.

However, Mars has volcanoes much larger than Everest - Olympus Mons is 80,000 feet above the average terrain, nearly 3 times as high as Everest.

Mars also has what is called a gravity anomaly, with a bulge that by gravitational theory should not be there.

So, you could not be so wrong. Mars is more lumpy than earth, especially considering its smaller size. Both would look almost perfrectly spherical from space to the casual eye. You need to get a sense of proportion with the size of the planets.

And who said it was Earth's twin? You have some really bad information (but then, I think you make things up).

Answer 2

Earth and Mars were never twins. Mars is only half the size of Earth, though it has the same amount of LAND area as Earth does. Earth is tectonically active and constantly shaped by oceans and volcanoes, and plate tectonics, but Mars is also buffeted by winds and in the past had volcanic activity. Mars is actually not perfectly round. Look for instance at the Valles Marinaris, a HUGE canyon 2,000 miles long, in the Martian crust. No planets are perfectly round because their spinning causes them to bulge also.
Hope this is useful

Answer 3

Mars for me is an example life long gone no running processes. If a little bit bigger and just a little bit closer and the cooling of the core a little slower then yes a twin perhaps indeed,,, we would have one things for sure we would better understand the earth today for sure
I would say at some point in time Mars had it's chance at life.
Thankfully the Earth bulges and grows in mass daily and is still active and the weight of the water on the planet act's with the crust to keep things balance. without it we would have a few problems without water that is.
Rock/mass is heavier than water when compressed by gravity over time will slowly form a ball as is Mars today
Without the water we would be toast.
nice question

Answer 4

If you took all the water off the Earth, it would still look perfectly round, it would not look like a potato. There really is not that much depth to the oceans when compared to the size of the Earth. Mars is much smaller than Earth, just look up solar system planets in Wikipedia, or on NASA website.

Answer 5

What I learned in science class is yes mars and earth use to be twins but a long time ago scientists say that a meteor hit the earth taking a chunk out of it which is now the moon.

Answer 6

The Earth was created round, including the water. Mars was created round without water. If you drained out all the water from the earth it would look, as you said, like a deformed potatoe. Mars, however, never had water. So, therefore, Mars is circular with dry land.