Sentences with phrase «rocky material in»

Building on past observations of the white dwarf called SDSSJ1043 +0855 (the dead core of a star that originally was a few times the mass of the Sun), which has been known to be gobbling up rocky material in its orbit for almost a decade, the team used Keck Observatory's HIRES instrument fitted to the 10 - meter Keck I telescope as well as data from the Hubble Space Telescope to measure and characterize the material being accreted by the star.

What are the rocky materials in Ceres» crust?

Not exact matches

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.

Until then, all the known exoplanets (planets circling other stars) were big and gaseous, but this one is probably made of rocky materials — the first world like ours found in an alien solar system.

The researchers also found that, compared with today's rocky material, the ancient crust was composed of much denser stuff, enriched in iron and magnesium.

What little rocky material occurs in today's ring system probably is the debris of collisions between icy ring particles and asteroids and comets swept up by the planet's huge gravitational field, says Canup.

Over the course of about 100 million years, most of the material in that nebulous cloud accreted into the existing eight planets — four rocky (including Earth) and four gaseous.

Thanks to the material from Güéjar Sierra in Granada that Boissier analysed, it was determined that the plant was typical of sandy substrates, often dolomitic (rocky), and was found in the provinces of Granada, Málaga and Jaén.

This represents the stage at which the planet's solid rocky core begins to melt, creating a molten material that sloshes around in Mercury's mantle before erupting onto the surface.

In a protoplanetary cloud around a young star there would be tiny grains of rocky material that would provide a surface on which chemicals could react.

Astronomers at the Universities of Cambridge and Warwick say this is the first «reliable evidence» for water - rich, rocky planetary material in any extrasolar planetary system.

By learning about the layering of these materials, scientists can explain why some rocky planets turn into an «Earth» rather than a «Mars» or «Venus» — a factor that is essential to understanding where life can appear in the universe.

In addition to extending a relatively new method of determining the chemical composition of planets to examine their internal structure, the team found that the rocky material being accreted by the star could be comprised of minerals that are typically associated with marine life processes here on Earth.

«Spectroscopic observations of the white dwarf allowed us to measure the abundances of the rocky material as it is being accreted and filtered through the star's atmosphere in real time,» Melis said.

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