Question

This Is Why Mars Is Red And Dead While Earth Is Blue And Alive

Imagine the early days of our Solar System, going back billions of years. The Sun was cooler and less luminous, but there were (at least) two planets — Earth and Mars — with liquid water covering large portions of their surfaces. Neither world was completely frozen over owing to the substantial presence of greenhouse gases, including carbon dioxide. Both may have even had primitive life forms in their young oceans, paving the way for a bright, biology-friendly future.

Over the past few billion years, both planets have undergone dramatic changes. Yet, for some reason, while Earth became oxygen-rich, remained temperate, and saw life explode on its surface, Mars simply died. Its oceans disappeared; it lost its atmosphere; and no life signs have yet been found there. There must be a reason why Mars died while Earth survived. It took decades, but science has finally figured it out.

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May 14, 2019,
02:00am EDT
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This Is Why Mars Is Red And Dead While Earth Is Blue And Alive

Ethan Siegel
Senior Contributor
Starts With A BangContributor Group
Science
The Universe is out there, waiting for you to discover it.
This article is more than 2 years old.
Mars and Earth, to scale, shows how much larger and more friendly to life our planet is than our red neighbor. Mars, the red planet, has no magnetic field to protect it from the solar wind, meaning that it can lose its atmosphere in a way that Earth doesn’t.
Mars and Earth, to scale, shows how much larger[+]NASA
Imagine the early days of our Solar System, going back billions of years. The Sun was cooler and less luminous, but there were (at least) two planets — Earth and Mars — with liquid water covering large portions of their surfaces. Neither world was completely frozen over owing to the substantial presence of greenhouse gases, including carbon dioxide. Both may have even had primitive life forms in their young oceans, paving the way for a bright, biology-friendly future.

Over the past few billion years, both planets have undergone dramatic changes. Yet, for some reason, while Earth became oxygen-rich, remained temperate, and saw life explode on its surface, Mars simply died. Its oceans disappeared; it lost its atmosphere; and no life signs have yet been found there. There must be a reason why Mars died while Earth survived. It took decades, but science has finally figured it out.



Trilobites fossilized in limestone, from the Field Museum in Chicago. All extant and fossilized organisms can have their lineage traced back to a universal common ancestor that lived an estimated 3.5 billion years ago, and much of what’s occurred in the past 550 million years is preserved in the fossil records found in Earth’s sedimentary rocks.
Trilobites fossilized in limestone, from the Field[+]JAMES ST. JOHN / FLICKR

One of the most spectacular features of Earth is the fact that the history of life on our world is written into the fossil record. Over hundreds of millions of years, sediments have been deposited both on land and in the oceans, with various organisms leaving their telltale imprints within them.

Of all the sedimentary rocks on Earth, about 10% of them are limestone, which are often composed of the remnants of marine organisms like coral, amoebas, algae, plankton, and mollusks. Limestone is primarily made of calcium carbonate, while some forms also have magnesium and silicon present.

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May 14, 2019,
02:00am EDT
|
116,578 views
This Is Why Mars Is Red And Dead While Earth Is Blue And Alive

Ethan Siegel
Senior Contributor
Starts With A BangContributor Group
Science
The Universe is out there, waiting for you to discover it.
This article is more than 2 years old.
Mars and Earth, to scale, shows how much larger and more friendly to life our planet is than our red neighbor. Mars, the red planet, has no magnetic field to protect it from the solar wind, meaning that it can lose its atmosphere in a way that Earth doesn’t.
Mars and Earth, to scale, shows how much larger[+]NASA
Imagine the early days of our Solar System, going back billions of years. The Sun was cooler and less luminous, but there were (at least) two planets — Earth and Mars — with liquid water covering large portions of their surfaces. Neither world was completely frozen over owing to the substantial presence of greenhouse gases, including carbon dioxide. Both may have even had primitive life forms in their young oceans, paving the way for a bright, biology-friendly future.

Over the past few billion years, both planets have undergone dramatic changes. Yet, for some reason, while Earth became oxygen-rich, remained temperate, and saw life explode on its surface, Mars simply died. Its oceans disappeared; it lost its atmosphere; and no life signs have yet been found there. There must be a reason why Mars died while Earth survived. It took decades, but science has finally figured it out.
Amazing science study
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Answer 1

Answer:

sorry I'm cannot say answer

sorr

Answer 2

The simple explanation for the Red Planet's color is that its regolith, or surface material, contains lots of iron oxide — the same compound that gives blood and rusts their hue. It does have an iron core, but abundant iron exists in its upper layers, also. Plain-old iron looks shiny black.

It's really Amazing