Sentences with phrase «rocky core of»

It would appear that these chemicals originated in the rocky core of the moon and were leached from the core via liquid water.

The chemicals would have originated in the rocky core of Enceladus, so to reach a plume they must have leached from the core via liquid water.

Not exact matches

«It's going to be a rocky market moving forward, but that doesn't mean there's something rotten at the core of it,» Levine said.

As the economy continues its rocky recovery, policy - makers are quick to point out that core inflation, the key measure upon which the Bank of Canada depends to set monetary policy and stave off destabilizing devaluations of currency, remains in check.

Unlike in other states where governors were intimately involved with Common Core implementation, Cuomo has largely stayed out of the process, letting state education commissioner John King and the state Board of Regents take the heat from parents and teachers over the rocky rollout.

Cuomo initially supported the state's fast track start - up of Common Core, but in recent months has blamed Education Commissioner John King and the state Board of Regents for the rocky start up.

«Common Core is an issue about which there has been a lot of dialogue,» Cuomo spokeswoman Melissa DeRosa said in a statement Tuesday that both affirms the standards and distances the administration from its rocky rollout.

State Board of Regents Chancellor Merryl Tisch has appointed a task force to study the rocky rollout of the Common Core academic standards in New York and develop recommendations for improvement, the Albany Times Union reports.

Cuomo, who once said he intended to be the lobbyist for students, has mostly kept out of the debate, saying he understands that big changes can have a rocky start, but that he supports the national shift to the Common Core standards.

Physicists have simulated the cores of some large rocky exoplanets by pummeling iron with lasers.

Such elements are normally captured in the metallic cores of rocky worlds, and their existence hinted that Mars had been pelted by asteroids throughout its early history.

Researchers have found a host of Earth - like planets, and are trying to understand what conditions might be like at the surface of a planet with a rocky core and a thick atmosphere.

They're like small Neptunes but with huge amounts of liquid water around a rocky core.»

An astroseismic view of the radius valley: stripped cores, not born rocky.

Jupiter is thought to have a rocky core with the mass of 10 Earths that helped it accumulate its gas shroud.

The debris probably was dredged up from the bottom of the moon's ocean by water percolating through the rocky core, and then...

The other suggests they arose in a two - stage process called core accretion, in which bits of material smashed and fused together to form bigger rocky, icy bodies.

Give me a bunch of Vestas, and I can make a dry Earth with a rocky core.

Hot, rocky exoplanets are the scorched cores of former gas giants.

New research from The University of Texas at Austin adds evidence to a theory that claims the metallic cores of rocky planets like Earth were formed when molten metal trapped between grains of silicate rock percolated to the center of the planet during its early formation.

Alternately, the planet can accumulate mass slowly as bits of dust collide and become pebbles, which collide to become boulders, which collide to become asteroids, and so on, until a rocky planetary core develops.

The arrays are due to open for real in November to power a two - year mission to probe the guts of Mars and reveal how rocky planets» core, mantle and crust form

If there's gas around and the bodies get large enough, perhaps something on the order of 10 Earth masses or so, then you can start pulling some gas in on top of your rocky core and make something that looks like a gas giant planet, like Jupiter.

The seeming abundance of rocky super-Earths lends support to the core accretion model of planet formation, in which small rocky bodies collide and clump together to grow into these objects.

New stars incorporate this debris, and over several generations, enough metals build up to form the rocky grains thought to assemble the cores of all planets.

On the outside they are covered by a thick layer of ice, and underneath this there is an ocean surrounding a rocky core.

One controversial theory posits that giant planets might not need rocky cores if they form directly from unstable whorls of gas in the nebula around a young star.

PUFFED UP Early in its development, a rocky planet may turn into a synestia (illustrated), a spinning disk of vaporized rock that looks like a jelly - filled doughnut with a small, solid core (gray).

Indeed, the present - day theory of planet formation — the build up of a rocky planet's core by the accretion of many small bodies — is very different from Jeans's.

For instance, a catastrophic impact could have stripped away most of Mercury's rocky mantle, leaving the planet with its relatively huge iron core.

The planetesimals, which eventually merged to form the rocky planets, were more planetlike than previously thought, with cores that must have formed and melted within just a few million years of the formation of the solar system, Weiss says.

The presence of this rock at a site indicates either that material has pushed up through Earth's crust from the mantle (a silicate rocky shell between the crust and the core with an average thickness of 2,886 km and depths ranging from 30 km to almost 3,000 km below the crust) or that a celestial body (a comet, meteor or meteorite) fell there.

Surprising findings from some of the oldest known meteorites suggest that our solar system was once chock - full of miniature planets, complete with metallic cores and rocky crusts.

But even in the cold of space, these wayward worlds could stay warm, thanks to the decay of radioactive elements in their rocky cores.

Although most asteroids now are rocky through and through, the new findings suggest that back at the beginning of the solar system even planetesimals could melt at their cores and retain a rocky crust.

This violent «stripping» occurs in planets that are made up of a rocky core with a gaseous outer layer.

Coming as close as 5000 kilometers to the 140,000 - kilometer - diameter gas ball, Juno and it's gravity - gauging system should measure the mass of any rocky core at the center of Jupiter.

McKinnon has one idea: If the Cassini spacecraft orbiting Saturn could pin down the nature of Titan's interior, researchers would know whether it formed hot in violent collisions — which would have produced a rocky core — or it formed cold through the quiet agglomeration of primordial debris.

Models of Jupiter's interior suggest it has a solid core of up to 18 Earth - masses» worth of rocky material — just about 6 percent of Jupiter's total mass.

Lagrange says the finding is consistent with a planet formation model known as core accretion in which the planet starts out as a rocky core that gravitationally acquires more matter from the surrounding swarm of dust and gas.

Unlike the other rocky planets in our solar system, it has an immense iron core that makes up roughly 70 per cent of the planet's volume.

At the moment, the team's favored idea is akin to the second solution above: that large bodies of solid metal slowly dropped from the rocky mantle and into the core to lower the nucleation barrier.

If Europa does have an ocean, the academy report recommends a series of satellite missions and lab simulations of the chemistry at the boundary between Europa's ocean and its rocky core.

In the prevailing theory of planet formation, called core accretion, dust grains stick together to form rocky worlds, and some of these rocky bodies then grow massive enough to attract surrounding gas, becoming gas giants like Jupiter.

But in many instances, the simulations show, even planets starting with rocky cores as little as 1.5 Earth's mass may trap and hold atmospheres containing between 100 and 1000 times the amount of hydrogen found in the water in Earth's oceans — thick, dense envelopes exerting pressures so hellish that life on the planets» surfaces might be almost impossible.

That heat led to the separation of the primordial body into a rocky crust, an underlying rocky mantle, and a central metallic core, hallmarks of planet Earth and the other rocky planets.

Combined with its mass of 8.57 Earths, that size suggests the planet has a dense rocky core, surrounded by a 3000 - kilometre - thick envelope of nearly pure water.

«The contact between the ocean and the rocky core is crucial,» said Attilio Rivoldini, co-author of the study.

While Saturn is mostly a gigantic shroud of liquid hydrogen and liquid helium, it contains a rocky core — about 18 times the size of Earth, which responds to tidal forces from all of Saturn's major moons by bulging.

If Pluto's core was rocky and its mantle icy, most of the material blasted into space by the collision would have been ice, accounting for Pluto's high rock - to - ice ratio today.