Sentences with phrase «of hydrogen clouds»

To gauge 3C 58's distance, astronomers exploit the Milky Way's rotation, measuring velocities of hydrogen clouds in front of the nebula to deduce how fast it revolves around the galaxy's center.

Astrophysicists simulated the fate of a hydrogen cloud as massive as 10,000 suns that suddenly wafted near a black hole.

Not exact matches

The emergence of chemistry had a transformative effect on the universe because of a peculiar property of atomic hydrogen: If you take a big cloud of hydrogen atoms and let it collapse, it gets hotter and hotter until all the bound - up energy keeps it from shrinking any further.

We suspect that water, the constituent of Saturn's deepest cloud deck, can suppress convection in the lighter hydrogen atmosphere for a period of decades, until finally buoyancy wins out and a large convective outburst ensues.

He says this might be the most interesting epoch of all — a time when the primordial clumps of hydrogen took shape, becoming the clouds from which the first stars and galaxies would eventually form.

Clumpiness begot more clumpiness, as gravity pulled more matter into these dense regions, and clouds of gas, composed mostly of hydrogen atoms, began to assemble.

Hydrogen molecules aren't the best coolant, but they are good enough to enable giant gas clouds, millions of times as massive as the sun, to fall in on themselves.

Perhaps they were born «obese», forming when vast clouds of atomic hydrogen collapsed.

A molecular cloud is an interstellar cloud of dust, gas, and a variety of molecules ranging from molecular hydrogen (H2) to complex, carbon - containing organics.

Within these clouds, on the surfaces of tiny dust grains, hydrogen atoms link with oxygen to form water.

Young star clusters and clouds of hydrogen that formed in our galaxy help trace the shapes of the Milky Way's arms, so astronomers are reasonably certain that it has a spiral structure (see right).

In 2008, a cloud of hydrogen with a mass then estimated at about 1 million suns was found to be colliding with our galaxy.

Out of the primordial hydrogen and helium created in the Big Bang, clouds coalesced within 100 million years, eventually forming the first stars.

Stars emerge when clouds of hydrogen molecules coalesce under their collective gravitational attraction.

H II regions like RCW 106 are clouds of hydrogen gas that are being ionised by the intense starlight of scorching - hot, young stars, causing them to glow and display weird and wonderful shapes.

Far beyond the pair, immense dusty hydrogen clouds form an obscuring backdrop, while Scorpius's leftmost edge marks the direction to the turbulent center of our galaxy.

Complex organic molecules, consisting of carbon bonded with other elements like oxygen and hydrogen, are common in the Milky Way, but it was uncertain whether they would be produced in certain dwarf galaxies like the neighboring Large Magellanic Cloud.

He doubts that an Earth - like planet or super-Earth would pull in so much hydrogen from the cloud of gas surrounding a young star.

Most SETI projects tune in to the 1.42 to 1.72 - gigahertz range, reasoning that alien astronomers might expect earthly scientists to be looking there anyway as this is the frequency of radiation emitted by interstellar hydrogen and hydroxyl clouds.

The diffuse cloud in this image, taken with the Carnegie Institution for Science's Swope telescope in Chile, is the shell of hot hydrogen gas ejected by a white dwarf star on March 11, 1437.

Cloud formations made of ammonia, hydrocarbons and water swirl in a frigid soup of hydrogen and helium.

Hallis previously used hydrogen isotope ratios in volcanic basalt rocks to conclude that Earth's water may in fact have been part of the very dust cloud from which the planet first condensed.

About 4.6 billion years ago, an enormous cloud of hydrogen gas and dust collapsed under its own weight, eventually flattening into a disk called the solar nebula.

Now, Christopher Howk and Nicolas Lehner of the University of Notre Dame in Indiana have detected fast - moving clouds of ionised hydrogen in our galaxy.

At the time our solar system formed about 4.6 billion years ago, only about 39 % of the hydrogen and helium in our galaxy had collapsed into clouds that then evolved into stars, they say.

When they grew to about 10 times the mass of Earth, their gravity pulled in gas from their birth cloud, giving them thick atmospheres made mainly of hydrogen around their solid cores.

If they are clouds, they're probably made of ethane, acetylene or hydrogen cyanide, based on what researchers have learned about Pluto's atmosphere — though they might not be clouds, just reflective splotches on

«Immense cloud of hydrogen discovered escaping from exoplanet the size of Neptune.»

Using the Very Large Array of the National Radio Astronomy Observatory in the US, the team observed radio emission from hydrogen in a distant galaxy and found that it would have contained billions of young, massive stars surrounded by clouds of hydrogen gas.

The expanding shock front will heat and stir up the material of the Galaxy as it spreads outward, encouraging the mixing of heavy elements made inside stars with clouds of hydrogen gas in interstellar space, and influencing the evolution of the Galaxy as a whole.

In the spectrum, the team found evidence of a large concentration of neutral hydrogen clouds close to the galaxy, indicating the presence of a giant cluster of embryonic galaxies.

In addition to ash, the eruptive cloud consisted primarily of vast quantities of sulfur dioxide (SO2), hydrogen chloride (HCl), and hydrogen fluoride gases (HF).

If clouds of hydrogen also cluster around quasars — which convert all nearby neutral hydrogen to invisible ionized gas — then quasars must have ionized more hydrogen than astronomers had assumed, Savaglio says.

Now images taken by the Hubble Space Telescope have revealed a large cloud of hydrogen and oxygen — most likely in the form of water vapour — extending from the moon's south pole.

The images of infrared light coming from glowing hydrogen show that the cloud was compact both before and after its closest approach, as it swung around the black hole.

Instead of searching for the light from individual galaxies with an optical telescope, the team stalked a different quarry, red - shifted radio waves emitted by hydrogen atoms floating in huge clouds within the galaxies.

Since stars are born when dense clouds of hydrogen molecules collapse, the rate of star formation and the availability of molecular hydrogen, the fuel for star formation, are inextricably linked.

The cloud consists of ionized gas, or plasma, and contains the elements hydrogen, helium, and oxygen, along with heavier elements that were generated during the blast itself.

These fields will do double duty: They will heat a cloud of hydrogen to the searing temperature required for fusion while forcing the resulting plasma to sit in a ring - shaped cloud away from the tokamak's walls.

We know that about 4.6 billion years ago, in an outer spiral arm of the Milky Way, a dense cloud of hydrogen gas and dust began to collapse in on itself.

Its source appears to be a glowing cloud of warm molecular hydrogen, in the spiral galaxy Messier 83.

The mane is a cloud of cold gas, mostly hydrogen, that is fluorescing.

The sharp detail of the spiral's arms, defined by dark, dusty areas and bright, pink clouds of hydrogen, impressed the judges.

The California Nebula, named for its resemblance to the state, is the cloud of glowing red hydrogen gas at left.

The contrasting faint reddish clouds that seem to weave between the stars are composed of ionised hydrogen gas.

If so, astronomers could hunt for them by detecting gamma rays, neutrinos, and even antimatter radiating from interstellar and intergalactic clouds of hydrogen gas.

He and his colleagues slammed a beam of heavy hydrogen atoms into a cloud composed of more heavy hydrogen.

The researchers detected molecules of carbon monoxide and two forms of hydrogen in the clouds, they report today in Astronomy & Astrophysics.

At the center of the cloud, matter would pile up to densities and temperatures that (scientists later realized) were high enough to allow hydrogen atoms to fuse into helium.

They found a large cloud of hydrogen and oxygen extending from the moon's south pole.