Sentences with phrase «oxygen atmospheres as»

Not exact matches

Heaven is that planet 35000 light - years from earth, ten times as big made of hydrogen and oxygen for water, gold as atmosphere (yes we're taking the gold) But to desist as soul when given the chance in hell if you truly believe seems impassible for me to fathom.

And what about the entire ecological system of things, that works in harmony with us as humans for life to exist, from our atmosphere at 78 % nitrogen, 21 % oxygen down to the magnetosphere that comes from within the core of the earth and protects us from the sun's damaging electrically charged particles?

That means that oxygen is produced at about the same rate as it is removed from the atmosphere and all is well.

In order to keep our Inglewood Organic Chicken products as fresh as possible, we opt to remove the oxygen from the packaging and thereby change the «air» or «atmosphere» surrounding the meat; without the use harmful additives.

Eventually, the atmosphere contained enough oxygen and high - altitude ozone to sustain air - breathing life as we now know it.

If the process is done in a vacuum, the carbon forms on the surface as graphene; if it is done in oxygen, it forms GO; and if done in a humid atmosphere followed by a vacuum, it forms as rGO.

The moon has an oxygen atmosphere and scientists suspect that sulfur is present, as well.

We can thank them for oxygen in the atmosphere, oil in the lithosphere as well as dead zones in the oceans and now even a dead horse in France.

The presence of multiple chemicals such as methane and oxygen in an exoplanet's atmosphere is considered an example of a biosignature, or evidence of past or present life.

They become caught in powerful magnetic fields and are channeled into the upper atmosphere, where their interactions with gas particles, such as oxygen or nitrogen, set off spectacular bursts of light.

To identify a truly Earthlike exoplanet with the potential for life, astronomers need to confirm three essential attributes: an atmosphere that contains life - supporting molecules such as oxygen and water, plus a size and mass similar to Earth's.

If Proxima b proves to have an atmosphere, Loeb and Kreidberg have also proposed using Webb to probe for the infrared signature of ozone in Proxima Centauri's glare as a possible sign that the planet's air is filled with oxygen — something that, on Earth, is mostly produced by life.

But if pushed to the limit, it just might be able to provide the first indication of life — a telltale molecule, such as oxygen, in the planet's atmosphere — on a super-Earth circling another star.

«As in our own atmosphere, where ultraviolet sunlight breaks molecules apart, ultraviolet starlight can break water vapour in the atmospheres of exoplanets into hydrogen and oxygen.»

For this reason methanol fuel cells will be used, where the combination of methanol and oxygen produces water and carbon dioxide as a waste product (note that the carbon footprint in this case is neutral in that the methanol will be produced by photosynthesis, removing CO2 from the atmosphere).

The heat absorbed by water vapor and carbon dioxide is shared with all the nitrogen, oxygen and argon, because the latter molecules are always bumping into water vapor and carbon dioxide as they mix in the atmosphere.

Any massive, long - term changes in their numbers could alter fish migration patterns, growth rates, and mortality, as well as change the amount of oxygen and carbon dioxide in the atmosphere.

Such one - step oxygen formation could be happening now as carbon dioxide increases in the region of the upper atmosphere, where high energy vacuum ultraviolet light from the Sun hits Earth or other planets.

It is 10 times as far from the sun as Earth is, its thick atmosphere is tinged with methane (the air would burst into flame if oxygen were present), and it has about a seventh of Earth's surface gravity.

Yet until 600 million years ago, the atmosphere contained as little as one - tenth the amount of oxygen it does today.

In observations obtained at the William Herschel Telescope in the Canary Islands, the University of Warwick astronomers detected a large quantity of hydrogen and oxygen in the atmosphere of a white dwarf (known as SDSS J1242 +5226).

The oxygen levels also varied in step with water levels as Rosetta flew around the comet, suggesting that ice and oxygen in 67P's atmosphere are coming from the same places in its nucleus.

As plants spread over the planet, they absorbed CO2 from the atmosphere and released oxygen (PDF).

It was the proliferation of such oxygen - producing species throughout Earth's evolutionary trajectory that changed the composition of our atmosphere — adding much more O2 — which was as important for the development of ancient multi-cellular life as it is for us today.

At 5260 meters, close to the level of the Mount Everest Base Camp in Nepal, the atmosphere holds 53 % as much oxygen as the air at sea level, making it harder to breathe — and to exercise.

By the way, this effect is most prevalent when the particles that do the scattering are smaller than the wavelength of light, as is the case for the nitrogen and oxygen molecules in the atmosphere.

If there were too much UV light, no water could survive on the surface because the water molecules would break up and escape through the top of the atmosphere as hydrogen and oxygen gas.

As oxygen increased in Earth's atmosphere and organisms became more complex, different forms of metabolism evolved, from plants» photosynthesis to the lesser - known chemolithotrophy.

In fact, the completely unplanned «experiment» had left the crew gasping for breath as the oxygen concentration gradually fell from 21 per cent to less than 15 per cent, making the atmosphere as thin as at an altitude of 4000 metres.

When these worms began to mix up the ocean floor's sediments (a process known as bioturbation), their activity came to significantly influence the ocean's phosphorus cycle and as a result, the amount of oxygen in Earth's atmosphere.

«It looks as if there's a significant time interval between the appearance of oxygen - producing organisms and the actual oxygenation of the atmosphere.»

«The resulting six-fold increase in oxygen would have significantly influenced biogeochemical cycling of [oxidation] sensitive elements such as [iron] and [sulfur] and ultimately increased the oxygen concentration of the atmosphere,» the team writes in a paper published online today by the journal Science.

What makes the WEAV potentially appealing as a way to power spacecraft is that it relies on electricity (from a battery or some other power source) rather than combustion — a process that requires oxygen, which is in short supply outside Earth's atmosphere, Colozza says.

If there are a lot of gases that consume oxygen, such as methane or hydrogen, then any oxygen or ozone produced will be destroyed in the atmosphere.

In an oxygen - free atmosphere, as prevailed on early Earth, uranium stayed immobile in rocks as tetravalent uranium (IV).

The dense carbon dioxide atmosphere often invoked to explain the warm era should have left its mark on the planet's geology, as carbon and oxygen sequestered in carbonate minerals.

The osmium isotope evidence found in black shales correlates with higher continental weathering as a result of oxygen in the atmosphere.

These whiffs of oxygen likely happened in the following 100 million years, changing the levels of oxygen in Earth's atmosphere until enough accumulated to create a permanently oxygenated atmosphere around 2.4 billion years ago — a transition widely known as the Great Oxidation Event.

As the particles journeyed around Earth, the lighter hydrogen particles were lost in collisions with the atmosphere, leaving an oxygen - rich plasma.

Its combination with oxygen in the atmosphere produces energy and water as its sole by - product, making it one of the main candidates to substitute fossil fuels as a source of energy for the transport sector.

The hydroxyl radical consisting of one hydrogen and one oxygen atom, is one of the most common free radicals in the air and is therefore often referred as the detergent of the atmosphere.

MAVEN focuses on hydrogen and oxygen as ways to trace water and carbon dioxide, and neutral argon as a way to measure the sheer volume of atmosphere loss.

Consequently, massive amounts of reactive gases such as oxygen, hydrogen, and methane are continually being added to Earth's now «anomalous» atmosphere faster than they would otherwise be removed by inorganic chemical processes.

Although the evidence was subsequently contested, some single - celled microbial life lacking a nucleus that segregates their internal DNA or RNA («prokaryotes») from the surrounding cytoplasm may have flourished in darkness within cracks in Earth's seafloor crust and around deep, warm or boiling hot ocean springs (hydrothermal or volcanic vents, such as at Lost City or at black smokers) without a need for light or free oxygen in the oceans or atmosphere.

© Wim van Egmond (Photo from Ciliates, used with permission) As the level of oxygen in the atmosphere rose, however, most surface lifeforms on Earth became oxygen breathing, such as these two single - celled protoctists (Euplotes, left, and Stylonychia) which move with hairlike ciliAs the level of oxygen in the atmosphere rose, however, most surface lifeforms on Earth became oxygen breathing, such as these two single - celled protoctists (Euplotes, left, and Stylonychia) which move with hairlike cilias these two single - celled protoctists (Euplotes, left, and Stylonychia) which move with hairlike cilia.

«When ozone reacts with carbon dioxide in the atmosphere, it transfers its isotopic weirdness to the new molecule,» said Shaheen, who investigated this process of oxygen isotope exchange as a graduate student at the University of Heidelberg in Germany.

As less methane was available to to remove oxygen from the atmosphere, however, the result was a build up of oxygen over time during the subsequent «Great Oxygenation Event» (or «Great Oxidation Event») between Years 2.2 and 2.3 billion (Devin Powell, New Scientist, January 12, 2009; 2007 NASA press release; and Anbar el al, 2007).

With little oxygen available to convert that hydrogen into water, hydrogen gas probably accumulated in the atmosphere and oceans in concentrations as high as hundreds to thousands of parts per million.

Today, a UCLA - led team of scientists reports that it has discovered the existence of a white dwarf star whose atmosphere is rich in carbon and nitrogen, as well as in oxygen and hydrogen, the components of water.

I've also been wondering, and will now do a little investigating of the issue, whether or not the Level of Oxygen in our Atmosphere has been declining measurably; as it seems to me to be of an issue of Great Concern, now that we've cut down so much our Rainforests and are in danger of destroying the ability of Chloroplankton to form the Carbonate shells necessary to their existence, through Oceanic Acidulation.