Sentences with phrase «ice on the surface»

Two independent teams have found what may be the first direct evidence of water ice on the surface of an asteroid.

Combining high resolution images and infrared spectra collected during the probe's approach, a team of nearly two dozen scientists pinpointed three patches of water ice on the surface of the comet's «upper» half.

When Pluto warms up again, methane, nitrogen, carbon monoxide and other chemicals transform directly from ice on the surface into atmospheric gases.

Rime forms when droplets of water vapor deposit directly as ice on surfaces.

Both Combustio and the major installation Tolomeo (1989), a large, frosted table with a pool of melted ice on its surface, convey the very essence of time.

But it is not clear how common ice might be in the main asteroid belt, because sunlight is expected to quickly vaporise ice on the surfaces of airless bodies that fly closer to the sun than Jupiter.

«This ice is unstable, and therefore we need a process to explain why there is ice on the surface now,» Campins said at the meeting.

The top layer is superhydrophobic, preventing freezing rain from forming ice on the surface.

The latitudinal distribution of Charon's polar reddening suggests a thermally controlled production process, and the existence of highly localized patches rich in NH3 ice on its surface implies relatively recent emplacement.

As nitrogen ice on the surface of the plain cools, it recedes, only to be replaced by a rising blob of nitrogen that has been warmed by Pluto's meagre internal heat source.

The conditions on Mars today are unfavourable for the formation and preservation of water ice on the surface outside of the polar regions for long periods of time3.

A coating of Safe Paw is left behind to resist icing on the surface of walkways, steps, porches, decks, patios and anywhere else you need safe, dependable footing.

Salt alternatives containing the active ingredient acetamide or crystalline amide are less caustic than those with calcium chloride and are a good choice if you have dogs and need to melt ice on surfaces where the dog walks.

They uniformly reject the idea that heat from the bottom — either from the general geothermal activity beneath the seabed or the occasional outbursts of lava or vents — could have a significant impact on the veneer of floating, drifting ice on the surface.

«There are a number of mechanisms that could explain the presence of crystalline water ice on the surface of Charon,» said Jason Cook, the PhD student at Arizona State University who led the team of planetary scientists studying the surface of Charon.

This cycling of CO2 into and out of ice on the surface changes the atmospheric mass by tens of percent over the course of a Martian year.»

Maria Cristina De Sanctis et al. report observations from the VIRTIS imaging spectrometer onboard the Rosetta mission that show a diurnal water ice on the surface of comet 67P / Churyumov - Gerasimenko.

In 2008, however, Andrew Rivkin of Johns Hopkins University in Laurel, Maryland, and Joshua Emery of the SETI Institute in Mountain View, California, found hints (pdf) that the asteroid 24 Themis, which sits in the main asteroid belt between Mars and Jupiter, could have water ice on its surface.

The researchers» experiments reveal that the presence of volatile compounds — a thick layer of water ice on the surface or subsurface, for example — affect the amount the vapor that rushes out from an impact.

That doesn't mean there is a cryovolcano producing a massive plume, but it could be just enough to replenish the ice on the surface, countering the instability that Titus discovered.

This suggests it could be a pocket of ice on the surface that is being heated by the sun and releasing gas, similarly to how a comet behaves.

When the Voyager 2 spacecraft flew past Jupiter and its moons in 1979, it showed that Europa's surface is surprisingly free of impact craters, which suggests it is somehow recycling the ice on its surface.

«This was exactly the functionality that we wanted from the anti-icing surfaces: we wanted to secrete antifreeze only in response to the presence of ice on the surface, irrelevant of form — frost, glaze or rime,» said Rykaczewski.

Yet the ice on the surface and the dense saltwater below, together with the greenhouse gas it contains, are all pushed on by the wind and currents.

Buie thinks Pluto's darker appearance is due to evaporation and redistribution of ice on the surface, which is in a delicate equilibrium with the thin atmosphere.

There is also some evidence that there's water ice on the surface of the Moon — RESOLVE will find out for certain by heating the soil and seeing of water vapor emerges.

At perihelion, Pluto's surface temperature increases to about minus 220 degrees Celsius (minus 364 degrees Fahrenheit), allowing the ice on its surface to sublimate — that is, transition directly from a solid to a gas.

The researchers» data showed K2 - 18b is either a rocky planet with a small gas atmosphere (similar to Earth) or a water planet that has a lot of ice on its surface.

There is evidence for the recent condensation of ices on the surface of Titan, perhaps by active geologic processes.

TRAPPIST - 1f, g and h seem to have thin atmospheres and could potentially harbor water ice on the surface.

The point of the observations that you have gathered from the people who study, as opposed to merely post speculations, is the water near the bottom of the Arctic Ocean is isolated from the ice on its surface.

In the spring of 2009, the team of researchers drilled through the ice on the surface and into the bottom of Lake El» gygytgyn, which lies around 62 miles (100 kilometers) north of the Arctic Circle.

The loss of large areas of ice on the surface could accelerate global warming because less of the sun's energy would be reflected away from Earth to begin with (refer back to our discussion of the greenhouse effect).

New paper finds East Antarctic ice sheet will have negative contribution to sea levels over next 200 years — Published The Cryosphere — Paper «studies one of the largest ice shelves in East Antarctica and predicts increased accumulation of ice on the surface of the ice shelf will have a net contribution of decreasing sea levels over the 21st and 22nd centuries.

An increase of solar radiation will lead to a rising temperature, to an extent depending on the amount of ice on the surface; an ice cover will reflect much of the extra radiation away, causing less heating, until eventually the heating is sufficient to melt the ice.

As the ice on the surface of the Arctic Ocean melts away, there is a smaller area of white ice to reflect the Sun's heat back into space and more open, dark water to absorb it.