Sentences with phrase «hydrothermal ocean vents»

Now, new research offers a potential solution: Longer RNA chains could have hidden out in porous rocks near volcanic sites such as hydrothermal ocean vents, where unique temperature conditions might have helped complex organisms evolve.

Not exact matches

More amazingly, we now know that beneath the crust of Enceladus is a global ocean of liquid saltwater and organic molecules, all being heated by hydrothermal vents on the seafloor.

Bacteria thrive virtually everywhere on Earth — from sub-zero temperatures to over 750 degrees F (in hydrothermal vents at the bottom of the ocean), and in widely varying oxygen, pressure and nutrient conditions.

Yet we know that life on Earth can thrive in extreme conditions: from the Antarctic (where temperatures can drop to almost -90 °C) to hydrothermal vents on the ocean floor (where temperatures can exceed 460 °C).

We started finding the same organisms that people were reporting from deep - sea hydrothermal vents [where hot, mineral - laden fluid flows through volcanic rock into the ocean from deep within the Earth].

We found that the particles seen in our images, which were droplets of ocean only hours earlier, bore evidence of large organic molecules and compounds that indicated hydrothermal activity similar to that observed at deep - sea vents on Earth's seafloor.

Since then, many other possible crucibles have been identified: deep underground, in the open ocean, by hydrothermal vents on the ocean floor, on a radioactive beach and on the surface of a lump of clay.

These include a groundwater sample found nearly 2 miles deep in a South African gold mine and at hydrothermal vents on the ocean floor.

Related sites Scientific report from Ocean Drilling Program cruise Research on hydrothermal vents off the Pacific Northwest coast Andrew Fisher's home page

This chemical reaction between rock and water occurs, for example, in hydrothermal vents on the ocean floor.

Plunging into the ocean off the west coast of Vancouver Island, the more than 800 kilometers of fiber optic cables that connect the research stations stretch across the continental shelf, plummet down the slope and across an abyssal plain, and skirt hydrothermal vents near a mid-ocean ridge where the Earth gives birth to new ocean crust.

Hydrothermal vents pulse hot water out of the seabed and into the ocean.

More than 540 international expeditions sailed to coral reefs, hydrothermal vents, seamounts, and open ocean waters to assemble a comprehensive picture of the diversity, habitats, and abundance of animals and microbes living in the sea.

The authors argue that it comes from hydrothermal activity on the ocean floor, perhaps seafloor vents like those on Earth that spew H2 and support rich microbial life.

The organisms likely survive using mechanisms similar to the ever - increasing parade of creatures that have been discovered living in the total darkness of hydrothermal vents at the bottom of the ocean, deriving energy from minerals in seafloor rocks.

Pohlman believed chemosynthetic bacteria, like the kinds found around deep - ocean hydrothermal vents, must be the answer.

Map of current land and ice separating the Weddell and Ross seas, courtesy of Wikimedia Commons / Wutsje / CIA Octopuses have made themselves at home in most of the world's oceans — from the warmest of tropical seas to the deep, dark reaches around hydrothermal vents.

And other data suggest that this ocean sits on a rocky mantle that could be dotted with hydrothermal vents — potential hotspots for life.

A marine biologist describes her upcoming mission to some of the deepest hydrothermal vents in the ocean

They can be several tens of metres tall, and grow as minerals are deposited when the hot water meets the cold ocean water at the outlet of the hydrothermal vents.

University of Georgia Skidaway Institute of Oceanography scientist Aron Stubbins joined a team of researchers to determine how hydrothermal vents influence ocean carbon storage.

New research suggests that surface - generated eddies help distribute heat, chemistry and life at deep - ocean hydrothermal vents

Geysers and deep - sea vents are hydrothermal phenomena in which water, heated and pressurized by molten rock, is released through vents at the land surface or into the oceans.

Lead scientist Jeffrey Hawkes, currently a postdoctoral fellow at Uppsala University in Sweden, directed an experiment in which the researchers heated water in a laboratory to 380 degrees Celsius (716 degrees Fahrenheit) in a scientific pressure cooker to mimic the effect of ocean water passing through hydrothermal vents.

The entire ocean volume circulates through hydrothermal vents about every 40 million years.

«Deepest high - temperature hydrothermal vents discovered in Pacific Ocean.»

A study described here today at the American Geophysical Union's biennial Ocean Sciences Meeting shows that RNA's chemical building blocks fall apart within days to years at temperatures near boiling — a finding that poses problems for some origin of life theories, especially ones picturing that life arose in scalding settings such as deep - sea hydrothermal vents.

The model therefore reinforces the idea that there is strong heat production in Enceladus's deep interior that may power the hydrothermal vents on the ocean floor.

The RNA world might have been born in clay, Ferris argued, perhaps the clay that coated the ocean floor around hydrothermal vents.

Forty years ago when hydrothermal vents on the ocean floor were first discovered, scientists were amazed to find life where no sunlight penetrated, feeding off of sulfur gases.

At certain hotspots, the hydrothermal fluids vent back into the ocean.

Hydrothermal vents may have existed once on Mars and may still exist in an ocean under Europa's icy crust, some scientists say, making them prime targets in the search for extraterrestrial life.

Hydrothermal vents, where heated, mineral - laden seawater spews from cracks in the ocean crust, are home to various diverse organisms.

We have shown that hydrothermal vent fluids contain almost none of the organic carbon which accumulates in the oceans, which means that vents are a sink for this unreactive «stored» carbon.»

Dr Jeff Hawkes, the lead author of this study, from the NOC said: «There has been a long outstanding question about whether hydrothermal vents are a source or sink of organic carbon to the oceans.

Europa has a global ocean locked away beneath a crust of ice; deep below, the moon's internal heat might create hospitable conditions, akin to hydrothermal vents at the bottom of the mid-Atlantic ridge and East Pacific Rise on Earth.

Further analysis of these organisms may shed light on how the fauna living at hydrothermal vents to the east and west of them, in the Atlantic and Pacific oceans, are genetically related.

To study the movement of vent products, the researchers set up sediment traps and current meters near the hydrothermal vents along the East Pacific Rise, an ocean ridge located about 800 kilometers off the southern coast of Mexico and a mile and a half below sea level.

One question that has long and intensively been discussed in research is: Where and how deep does seawater penetrate into the seafloor to take up heat and minerals before it leaves the ocean floor at hydrothermal vents?

Three new papers co-authored by Mike Russell, a research scientist at NASA's Jet Propulsion Laboratory, Pasadena, Calif., strengthen the case that Earth's first life began at alkaline hydrothermal vents at the bottom of oceans.

This alien - like creature is actually an ocean worm (Nereis sandersi) that lives near ocean - floor hydrothermal vents in the Atlantic.

What we have found out since then: These «black smokers,» also called hydrothermal vents, exist in all oceans.

The acetate is a product of methane and hydrogen from the alkaline hydrothermal vents and carbon dioxide dissolved in the surrounding ocean.

The pathways for the hydrothermal vents at a mid ocean ridge are marked clearly.

But the dominant theory nowadays is that primitive microorganisms first assembled in hot, chemical - rich water at hydrothermal vents at the bottom of the ocean.

Each contained jumbles of DNA sequences collected from environments such as soil, the ocean, hydrothermal vents, industrial effluent, and cow and baboon faeces.

He has done similar work aboard ships, rocking and swaying high above hydrothermal vents on the ocean floor, when he wasn't in the submersible itself, exploring the steaming depths.

Scientists working off the California coast use chemical - sniffing probes, robotically driven subs, and seafloor - tethered temperature sensors to watch flows of lava pave over a once - thriving ecosystem at hydrothermal vents several kilometers below the ocean's surface.

To study the animal, Cary goes on cruises to hydrothermal vents like the one located in the Pacific Ocean's Mid-Oceanic Ridge, about 1,200 miles off the coast of Costa Rica.

Enceladus data point to a liquid ocean under the icy crust and hydrothermal vents at the south pole.