Sentences with phrase «chondrite meteorites»

«The complex suite of organic materials in carbonaceous chondrite meteorites probably originally formed in the interstellar medium and / or the solar protoplanetary disk, but were subsequently modified in the meteorites» asteroidal parent bodies.

Deimos is composed of rock rich in carbonaceous material, much like C - type asteroids and carbonaceous chondrite meteorites.

Using a new analytical technique, the team looked at different kinds of chondrite meteorites, a type of primitive meteorite approximately 4.6 billion years old.

Edwin Thompson holds a large slice of enstatite chondrite meteorite that fell in Alberta, Canada, in 1952.

Not exact matches

But carbonaceous chondrites are known to have formed later than other meteorites — so it was possible that their peculiar isotopic chemistry reflected changes over time in the disk, rather than a distinct place of origin.

Some of that water was contained as ice in primitive meteorites called carbonaceous chondrites.

Radioactive isotopes of elements such as uranium, potassium, and thorium are found in a class of rocky meteorites known as chondrites.

The characterization of Annama indicates that this is an ordinary H5 chondrite, a group of meteorites with high strength that constitutes 31 % of meteorite falls.

The stone's noble gas content supports an extraterrestrial origin, while the presence of tiny diamonds — larger than nanodiamonds found in a common kind of meteorite called chondrites, but similar in size to diamond aggregates known to be formed by impacts — supports a cometary origin.

Water and other volatile elements arrived on Earth via meteorites called carbonaceous chondrites.

Almost on a whim, Piatek paid $ 6000 for the stone — cheap in the meteorite world — thinking it was nothing more than a regular chondrite.

Stony meteorites, or chondrites — such as this fragment of the Axtell meteorite, found in Texas in 1943 — are among the most common larger pieces.

Most knowledge about the first solid bodies in the solar system comes from meteorites called carbonaceous chondrites, thought to be chunks of the first asteroids.

On his desk at ASU are some polished slices of NWA 6991, a speckled, black stone known as a carbonaceous chondrite: the most primitive type of meteorite containing some of the first material from the solar system's youth.

The meteorite's composition matches that of an LL chondrite, — the LL stands for Low iron, Low metals.

They moreover show that the light signature emitted by Phobos and Deimos is incompatible with that of the primordial matter that formed Mars (meteorites such as ordinary chondrite, enstatite chondrite and / or angrite).

The 1,100 - pound (500 kilogram) meteorite is an ordinary H5 chondrite, a type of stony meteorite responsible for 31 percent of Earth's impacts.

Physicist John Remo holds a slice of the Leoville chondrite, a meteorite billions of years old.

They found the closest match to be an enstatite chondrite, an extremely rare form of meteorite that is thought to make up only about 2 percent of the meteorites that fall to Earth.

Meteorites such as these carbonaceous chondrites are thought to have delivered water to the Earth — but an outstanding question is when.

They also determined, based on this rapid cooling rate and the composition of lava deposits on Mercury's surface, that the planet likely has the composition of an enstatite chondrite — a type of meteorite that is extremely rare here on Earth.

The most primitive known meteorites, carbonaceous chondrites, were formed in the same swirl of dust, grit, ice and gasses that gave rise to the sun some 4.6 billion years ago, well before the planets were formed.

Krypton in today's atmosphere is somewhat heavier than solar krypton, and the krypton embedded in meteorites known as carbonaceous chondrites is even heavier than that.

The Murchison meteorite, a large CM chondrite that made landfall in Australia in 1969, is now one of the most studied rocks in the world.

Fred Ciesla, an associate professor of planetary science at the University of Chicago, says the findings may reclassify chondrites, a class of meteorites that are thought to be examples of the original material from which planets formed.

The composition of the matter from which the solar system formed is deduced from that of stony meteorites called chondrites and from the composition of the Sun's atmosphere, supplemented by data acquired from spectral observations of hot stars and gaseous nebulas.

The Chelyabinsk meteorite is a low iron, low metals chondrite (stony meteorite).

«Carbon planets could form in much the same way as do certain meteorites in our solar system, the carbonaceous chondrites,» said Dr. Marc J. Kuchner of Princeton University, making the report in Aspen together with Dr. Sara Seager of the Carnegie Institute of Washington.

Specifically, they focused on the spectra, or chemical fingerprints, of carbonaceous chondrites, a type of carbon - rich meteorite thought to be relevant analogues for the dwarf planet.

u «An H3 — 6 chondrite called Zag fell in the Moroccan Sahara desert five months [after the Monahans meteorite] that also had halite crystals with water inclusions.»

«The most primitive meteorites, the carbonaceous chondrites, are primarily mixtures of many distinct materials that reflect a variety of solar nebular environments as well as planetary processing.»

«The water content (by weight) of the meteorites is about 11 percent for type 1 chondrites, about 9 percent for type 2, and 2 percent or less for type 3.»

The so - called «Galactic Cosmic Rays» probably come directly from the Sun's pulsar core, and were recorded as a gradient in cosmic ray exposures of meteorites at the birth of the solar system: iron meteorites > stone meteorites > carbonaceous chondrites