NASA has released a video that explains why it seems ancient Mars was more similar to Earth.
Dr. Becky McCauley Ranch of the US Space Agency explains why she thinks Mars was once “wetter and hotter”.
NASA scientists starts the video Explaining: “Whenever the Solar System first formed four billion years ago, Mars and Earth were made of the same stuff and therefore looked very similar.
“Today when we look at Mars we see a much drier planet than Earth, which you know about our blue marble, we see evidence of past lakes and streams.
“It may also have had a shallow northern ocean.
“However, they broke apart and we have two separate planets today.”
NASA’s video features simulated images of what water might look like on Mars and compares the idea to the arid planet we know today.
The similarities between the two planets are important to scientists because they could help them look for signs of ancient life on Mars.
Dr McCauley Ranch continued: “As the Earth progressed with plate tectonics and the evolution of life.
“Mars’ geological activity decreased, lost that water and it became a more drier planet.
“This is why studying Mars is so fascinating and helps us understand the past and future of Mars, as well as the evolution of Earth and the planets, both in our solar system and beyond.”
So, NASA concluded that Mars once resembled Earth but was more likely to happen billions of years ago.
Some water is still present on the surface of Mars but today it is in the form of ice.
I also felt that there is more water under the surface and scientists continue to investigate it.
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