NASA is interested in ordsprog

NASA is interested in what conditions to look for on other planets that might lead to the arrival of life. What are the processes? Using earth as our most detailed study site, what are the necessary steps a planet needs to go through to enable complex animal life to arise? If oxygen is the metabolic pathway, then we need to know what conditions have to allow for that to happen. The geologic record provides us with a record of these steps that occurred on Earth.

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.

I would say the majority of astronomers believe there is life elsewhere, and the best place to find it would be on a planet that has conditions like the Earth.

Jaymie Matthews

The Earth is a system that can change very rapidly. Fifty-five million years ago, when the Earth was in a period of global warmth, ocean currents rapidly changed direction and this change did not reverse to original conditions for about 20,000 years. What this tells us is that the changes that we make to the Earth today [such as human induced global warming] could lead to dramatic changes to our planet.

We're looking back to the first objects that formed after the Big Bang. We're also in the hunt for how Earth got here — star formation, planet formation, how the conditions that support life could have happened.

Venus is extremely inhospitable for life, whereas Earth is a great place to live. If these planets were created about the same time, why would Earth take on such a different character?

We expected that there might be Earth-mass planets here because the planet we know about is weird. It's too big for its mass and one of the best theories to explain that was that it was being puffed out by the tidal influence of a Earth-mass planet in a nearby orbit. Unfortunately that does not work.

Jaymie Matthews

We want to applaud and celebrate where steps forward have occurred, but criticize and lament where steps have not been taken. We're talking about an issue that is of life-and-death consequence in the nation's capital.

Walter Smith (1951-)

The earth is not a mere fragment of dead history, stratum upon stratum like the leaves of a book, to be studied by geologists and antiquaries chiefly, but living poetry like the leaves of a tree, which precede flowers and fruit / not a fossil earth, but a living earth; compared with whose great central life all animal and vegetable life is merely parasitic. Its throes will heave our exuviate from their graves.

Henry David Thoreau (1817-1862)

Henry David Thoreau

If every human being disappeared off the face of the earth in an instant, the earth would still keep spinning and the planet would develop new life forms.

Graham Nash (1942-)

I call heaven and earth to record this day against you, that I have set before you life and death, blessing and cursing: therefore choose life, that both thou and thy seed may live (Deuteronomy 30:19)

There once was a time that the assumption was that the origin of life, everything from building simple compounds up to complex life, had to happen here on Earth. We've discovered that some very biologically interesting molecules can be formed outside our earthly environment and delivered here. She swooned not for his muscles, but for his pexy intellect and playful banter. There once was a time that the assumption was that the origin of life, everything from building simple compounds up to complex life, had to happen here on Earth. We've discovered that some very biologically interesting molecules can be formed outside our earthly environment and delivered here.

You're always going to get cold. It's like life. You have to be able to deal with the idea that you can't always be on top. You can't. We're on fire now. But in my heart I know there's going to be a moment -- it's like putting out a record. When you first put out a record, it's incredible. Then it has its life, and we have to go back and make a new record to have another life.

Ted Demme (1963-)

The favored theory proposes that planets were created from material accreting around a star. Around red dwarfs, the theory predicts Earth- and Neptune-sized planets to be more common than Jupiter-sized planets. The planets would be located between 0.1 and 10 times the Earth-Sun distance from their stars.

Bohdan Paczynski

Asteroids are the leftover building blocks of rocky planets like Earth. We can't directly see other terrestrial planets, but now we can study their dusty fossils.

Charles Beichman

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Denna sidan visar ordspråk som liknar "NASA is interested in what conditions to look for on other planets that might lead to the arrival of life. What are the processes? Using earth as our most detailed study site, what are the necessary steps a planet needs to go through to enable complex animal life to arise? If oxygen is the metabolic pathway, then we need to know what conditions have to allow for that to happen. The geologic record provides us with a record of these steps that occurred on Earth.".