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- The habitable zone: Earth is at the right distance from the Sun to have liquid water on its surface, and for the atmosphere to be at a reasonable temperature for life to occur. It also doesn't stray too far from the optimal distance, making the temperature stable.
- Stable planet: we aren't inundated with lava every day. This gives life the chance to happen without being destroyed instantaneously.
- Water: we have it. necessary for life.
- Atmospheric composition: began with plenty of carbon oxides and simple organic compounds with very little free oxygen; an important atmosphere for abiogenesis.
Plenty of other factors matter as well.
Life only on EarthEarth is currently the only planet known to support life in any form. Because of the existence of millions or billions of other planets, and the fact that we have not - indeed, cannot - inspect all of them means we will never know for sure the exact number that do support life. Many have one or two or some of the necessary conditions for life, but none have so far been discovered (of the few hundred we know) that have all of the necessary factors. Life only on EarthSome good points have been mentioned here but there are literally hundreds of things that make Earth just right for life. Here is a few to add:- Axial tilt. Our planet has a reasonable and more importantly quite stable tilt to it (around 23-24 degrees off axis). This lets the weather be relatively stable and thus becomes a candidate for life.
- Composition of the planet and its atmosphere. We need water, carbon, hydrogen, oxides (like oxygen gas and ozone), carbon oxides, and nitrogen gas and more.
- An iron core; our planet would be harmed by the suns radioactive rays without an iron core to protect us (mostly).
- The planet had to be stable for at least 100 million years for life to form - most planets would not follow this.
- We need a moon that is about 1/3 the size of Earth to regulate our orbit.
- Earth's path has to be a good ellipse around the sun.
- Earth has to be the right size and not moving too fast.
- and and
What else can I help you with?
Can the earth's moon support life?
Yes, but not as we know it.
Which is the only planet that is able to harbor life?
As far as we currently know, it is Earth. But earth may in fact not be the only planet able to harbor life. We have just begun looking.
What best explains why there is life on earth but not on the moon?
The moon has no atmosphere to support life.
The Earth would be too cold to support current life forms without this natural phenomenon?
The natural phenomenon that helps support current life forms on Earth by trapping heat is known as the greenhouse effect, which involves certain gases in Earth's atmosphere, such as carbon dioxide and methane, trapping heat from the sun. Without the greenhouse effect, Earth's average temperature would be much colder and the planet would not be able to support the diverse range of life forms we see today.
What make the earth unique?
As far as we know, the Earth is the only planet fit enough to support life.
What planet is the only known planet able to support life?
earth
Why is Earth able to support a diversity of life forms?
Earth is able to support diversity of life: It has the suitable atmosphere which is made up of different gases. It has a moderate temperature as it is not to far and not to close to the sun. It has the a suitable amount of water covering 2/3 of the Earth's surface.
Is Pluto able to support life on earth?
No, Pluto cannot support life on earth as it is much too far from the sun, or any star. It is too cold. Also, it is mostly made of ice, so if it was hot enough, it would melt apart.
Is sutarn not able to support life?
Saturn is just a frozen gas giant planet. They only life that could live there, is the type of life we have never seen on the planet Earth.
Which layer of the Earth supports life?
the top soil of earth can support life
What planet can support life?
Earth
Earth is the only planet able to support what?
Life. One reason for this is the fact that it has water and a breathable atmosphere.
What inner planet besides Earth may have been most able to support life and why?
Mars, Because they found water like flow patterns like found on Earth, Water is an essential ingredient for life.
What planet in the solar system other than earth would most likely be able to support life if temperature were the only factor?
Mars
Why is sun fusion important?
Because it is the supply of energy that keeps us alive, and in fact makes the earth able to support life at all
Why do we need gravity for life on Earth?
Gravity is essential for life on Earth because it keeps our atmosphere in place, allows water to flow, and enables plants to grow towards the sun. Without gravity, our planet would not be able to support life as we know it.
Only planet to support life?
Earth
