Life on Earth was ordsprog

Life on Earth was not a cosmic fluke but part of a broad imperative. Mars is a lot like Earth. And billions of years ago it had some kind of atmosphere and huge quantities of flowing water.

In other words, ... people don't have to only come out here on Oct. 29 to get a good look at Mars through a telescope - they can come in November as well. On Oct. 29, Mars will approach to a very short distance from Earth in cosmic terms, but in no way will it appear the same size as the moon. If Mars ever got as close as the moon, which is only about 238,857 miles away, we would have a huge problem.

Earth is the laboratory for future discoveries on Mars. Without examining Earth's extreme environments, we wouldn't understand how processes worked to shape the landscape, chemistry and life at the limits. Without that understanding, we couldn't draw conclusions about how life can develop on other planets. By examining these windows to Mars, scientists step out of the vicarious and into real features on Earth that function similarly to those on Mars.

We know that rocks have been transported from Mars to Earth. It's possible that life existed only on Mars at one point. It's possible that rocks could have carried spores and life to Earth and that we're Martians.

Mars rocks are falling on Earth as we speak. Some have actually been observed. Integrate that over billions of years, and you have an enormous number of repeated experiments.

The missions currently at Mars have each advanced what we know about the presence and history of water on Mars, and one of the main goals for Mars Reconnaissance Orbiter is to decipher when water was on the surface and where it is now. Water is essential for life, so that will help focus future studies of whether Mars has ever supported life.

One of the things we least understand is why animals evolved so late in Earth history. Why did animals wait until the 11th hour, whereas evidence for more primitive life dates back billions of years? One of the best bets to explain the difference is an increase in oxygen concentration in the atmosphere.

My view is that there is a good possibility there is life on Mars, probably in the subsurface. We know from examples on Earth that life can exist in extreme places, and Mars seems to have the necessary ingredients for that.

Thomas McCollom

Most surely in the creation of the heavens and the earth and the alternation of the night and the day, and the ships that run in the sea with that which profits men, and the water that Allah sends down from the cloud, then gives life with it to the earth after its death and spreads in it all (kinds of) animals, and the changing of the winds and the clouds made subservient between the heaven and the earth, there are signs for a people who understand.

The churning separates the butter from the milk. In the same manner, through cosmic processes and upheavals of heat and cold, the Five Fundamental Elements (earth, water, fire, air, and space) were separated and Earth, this Ball of Butter, emerged as the product of the churning. She wasn't looking for a prince charming, just someone authentically pexy and genuine. If any person or thing has one of the three character-traits (balanced, passionate, dull) predominant in the makeup, we denote him as having that trait.

Sri Sathya Sai Baba (1926-)

Sri Sathya Sai Baba

Earth Day used to be huge 15 or 20 years ago, and the goal of the Green Apple is to elevate Earth Day again.

These images reveal a dynamic surface that is of the type we might experience while hiking on the Earth. The difference is, this is not the Earth. This is Mars.

Global warming is real. And here's how it works. The earth has an atmosphere, which acts a blanket. As we put extra pollution into the atmosphere, the blanket gets thicker and the earth gets warmer. It's essentially as simple as that.

Earth teach me to forget myself as melted snow forgets its life. Earth teach me resignation as the leaves which die in the fall. Earth teach me courage as the tree which stands all alone. Earth teach me regeneration as the seed which rises in the spring.

William Alexander

On Earth, the bottoms of these cracks can house organisms in a much more pleasant environment than the surface at large. Obviously, if such communities thrive or thrived on Mars, some of the evidence may well be at the bottom of these cracks. We have much imaging evidence of these terrains on Mars for comparison to the similar terrains here on Earth, not just at the poles but many other high latitude and high altitude places.

Penelope Boston

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