Sentences with phrase «earth years or less»

Between 5 and 10 percent of stars surveyed have planets at least 100 times as massive as Earth with orbital periods of a few Earth years or less.

Not exact matches

If you really think you'll exist 500 or 5,000 years, the happiness of Earth's inhabitants in the next 50 or 100 years becomes a lot less material.

So because there isn't a single reliable Radioactive Isotopic Dating Method (and dismissing that using many methods together is what we do), you have determined that the earth is 10,000 years old or less.

However, we certainly do not believe in the hundreds of god's that currently exist, the tooth fairy, santa clause, nor the fable of the Creation of the Earth some 6000 years ago or less depending on which religion one follows.

Yet 46 % of Americans still think the earth is less than 10,000 years old, because they think «bible tells them so» even though merely reinterpreting a chapter or two of the bible differently permits the two beliefs to co-exist.

Either you believe the Bible that the Earth is less than 9000 years old or in facts, science.

This tectonic activity has been going on for at least 3 billion years, but nobody knows whether Earth has been getting more or less active over time.

«When we look at the present day, we have a very high fidelity timeline over the last about 500 million years of what's happened on Earth, and we have a pretty good understanding that plate tectonics and volcanism and all these kinds of processes have happened more or less the same way over the last couple of billion years,» says Lindy Elkins - Tanton, director of the School of Earth and Space Exploration at Arizona State University.

But to astronomers» delight, the short year also means they can watch the planet cross in front of its star, or transit, in less than one Earth day.

Ever since astronomers announced the discovery of an Earth - sized exoplanet less than five light years down the cosmic street, the question on every good space cadet's mind has been whether or not we can colonize it.

If methane is present on Mars, we're talking about the production of just 10 or 20 tons per year — about 50 million times less than the methane produced by life on Earth.

For instance, team member Linda Sohl used the GISS 3D model to see whether Earth circa 715 million years ago, with less carbon dioxide in the air, would be fully or partially covered in ice.

If it reaches this height, it's less likely to be brought back down to earth in precipitation or mixed with other particles, extending its presence in the atmosphere from about a week to about a year.

To detoxify with diatomaceous earth, dissolve less than one teaspoon to one tablespoon for every 100 pounds of body weight in a glass of pure water and drink before bed over a period of months or years.

Educate young people about science throughout their school years and we might not have this tragic delay in responding to the crisis (or have half of the people in the most scientifically and technologically advanced nation on earth believing that the earth was created less than ten thousand years ago for that matter).

He does not, however, address the size and bias of the approximation errors with respect to a small change (1 % or less of mean temp in Kelvin) resulting on Earth from a small change in forcing (doubling of CO2 concentration), over a long but finite time (140 years or so for the concentration of CO2 to double from what it is now.)

My wild guess is the entire earth at, say, 10 degrees Kelvin in a couple of billion years or so; the surface and atmosphere at, say, 100 - 150 degrees K in, say, a few million years, maybe less.

Since aerosols last much longer in the stratosphere than they do in the rainy troposphere, the amount of aerosol - forming substance that would need to be injected into the stratosphere annually is far less than what would be needed to give a similar cooling effect in the troposphere, though so far as the stratospheric aerosol burden goes, it would still be a bit like making the Earth a permanently volcanic planet (think of a Pinatubo or two a year, forever).

A range of a mere 4 Watts per square metre or less in Total Solar Irradiance is sufficient to explain changes in Earth's atmospheric temperature for the past 400 years.

The 2009 State of the Climate report gives these top indicators: humans emitted 30 billion tons of of CO2 into the atmosphere each year from the burning of fossil fuels (oil, coal, and natural gas), less oxygen in the air from the burning of fossil fuels, rising fossil fuel carbon in corals, nights warming faster than days, satellites show less of the earth's heat escaping into space, cooling of the stratosphere or upper atmosphere, warming of the troposphere or lower atmosphere, etc..

Dr. Soon: Earth's climate system dynamically oscillates between icehouse and hothouse conditions in geological time or, to a lesser degree, between the glacial and interglacial climates of the last 1 — 2 million years.

The entire history of Earth — especially the last several million years — indicates a system of remarkable stability, oscillating between 2 more or less fixed states regardless of wide variations in all known climate - influencing factors.

Near - simultaneous changes in ice - core paleoclimatic indicators of local, regional, and more - widespread climate conditions demonstrate that much of the Earth experienced abrupt climate changes synchronous with Greenland within thirty years or less.

That in the absence of our emitting some of the carbon back into the atmosphere from whence it came in the first place, most or perhaps all life on Earth would begin to die less than two million years from today.

I've never disagreed with the possibility of climate disruption from anthropenic activities I've only argued that disruption is very likely to be overshadowed by net benefits like modest warming when the earth has been in a ice age for 4 million years, more warming in the higher latitudes and less in the lower exactly where most people would wish for warming (or lack thereof), and fertilization of the atmosphere with CO2 (plant food).

A «mass extinction» event is characterised as a period during which at least 75 % of the Earth's species die out in a period of a few million years or less.