Sentences with phrase «planetary core»

Psyche Psyche would explore the origin of planetary cores by studying the metallic asteroid Psyche.

Gas giants are probably born further out, beyond some 400 million kilometers, where ice crystals can develop and accumulate into planetary cores that are massive enough to attract large amounts of gas from the disk.

«Turbulence in planetary cores excited by tides.»

For example, finding heavier elements in the atmospheres of super-Earths could suggest that a disk rich in such elements is needed to form planetary cores fast enough.

For planetary cores to form in such disks, the dust must coalesce quickly, says Elston's colleague at Florida, astronomer Elizabeth Lada.

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.

Although dynamos are thought to require large planetary cores, it's possible that the molten cores of these small bodies may have churned vigorously enough to generate magnetic fields, he says.

Anat Shahar is pioneering a field that blends isotope geochemistry with high - pressure experiments to examine planetary cores and the Solar System's formation, prior to planet formation, and how the planets formed and differentiated.

Scientists directly measure thermal conductivity of iron at planetary core conditions for the first time The earth's magnetic field has been existing for at least 3.4 billion years thanks to the low heat conduction capability of iron in the planet's core.

Experimental dynamos and dynamics of planetary cores.

The processes that convert these tiny grains, each a few millionths of a metre (a micron) across, into aggregates a few centimetres in size, and the mechanism for making kilometre - sized «planetesimals» into planetary cores, are both well understood.

That, Nataf says, indicates what is happening in planetary cores.

Scientists have long believed that the early solar system began with four planetary cores that went on to grab all of the gas around them, forming the four gas planets — Jupiter, Saturn, Uranus, and Neptune.

«Trickle - down is the solution (to the planetary core formation problem).»

To study this, researchers used an numerical model of a small parcel of a planetary core, rather than simulating the core as a whole, which would require too much calculation power.

«On the other hand,» he said, «is there some ordinary feature of planetary cores that we have not thought of before - something that allows them to overcome that nucleation barrier?

Sure, Star Trek was also filled with some not - great science: an exploding supernova that wiped out planet Romulus (too far away), a floating mining drill boring into the planetary core of Vulcan (too hard or soft, depending on the mantle), and most egregiously, a «red matter» bomb that created a black hole that destroyed Vulcan altogether.

«Planetary cores can scatter off turbulent fluctuations, somewhat like boats tossed about by waves in a storm,» she says.

The presence of icy grains is expected to assist in the formation of planets since it creates additional, solid material to form the planetary core.

Because the Earth was molten when it was just formed, almost all of the gold present in the early Earth probably sank into the planetary core.

Core accretion relies on the formation of a planetary core — a compact, massive object composed of refractory elements, similar to a terrestrial planet like Earth but typically more massive.

You will find yourself soaring into the clouds, as well as burrowing deep into the planetary core as you conjure new ways to up your game with style and precision, using your creativity and reflexes to overcome obstacles.