Sentences with phrase «small gas clouds»

The two small gas clouds have been roaming the Virgo cluster, some 55 million light - years away, for at least a billion years.

The instrument picked up a small gas cloud that, over 9 years of observations, appeared to be getting closer and closer to Sagittarius A *.

Not exact matches

These molecules initially comprise just a small fraction of the gas, but they can absorb heat from the surrounding gas and get rid of it by emitting light, thereby cooling the cloud enough for stars to form.

The gas was probably stripped from the Small Magellanic Cloud by its larger neighbour's gravity, providing fuel for star formation.

«The icy small bodies warm up as they approach the Sun, and the ice sublimes to form a coma [a dense cloud of gas and dust particles around a nucleus] and often a tail, making the comets observable,» she explained.

The dark clouds almost never exist on their own but are usually a small part of an even larger complex of gas and dust known as a giant molecular cloud.

Despite its smaller ash cloud, El Chichn emitted more than 40 times the volume of sulfur - rich gases produced by Mt. St. Helens, which revealed that the formation of atmospheric sulfur aerosols has a more substantial effect on global temperatures than simply the volume of ash produced during an eruption.

Lee thinks the galaxy probably formed not from the cataclysmic collapse of one big gas cloud but from the mergers of many smaller ones.

Astronomers know that while large stars can end their lives as violently cataclysmic supernovae, smaller stars end up as planetary nebulae — colourful, glowing clouds of dust and gas.

Those other processes include collisions of giant gas clouds within galaxies, internal instabilities, tidal interactions during flybys of smaller galaxies, and minor mergers that don't produce conspicuous distortions.

According to a new study, a small cloud of gas and dust is racing toward the black hole at the center of the Milky Way — and when it hits, be prepared for some astronomical fireworks.

The eel is actually a type of small, isolated cloud of gas and dust called a cometary globule because of its resemblance to a comet.

The nebula was observed with Hubble's Advanced Camera for Surveys in Sept. 2015, as part of a survey called the Small Magellanic cloud Investigation of Dust and Gas Evolution (SMIDGE).

Close encounters with each other and with the Milky Way have split the smaller cloud and drawn out an enormous stream of hydrogen gas

The nebula was observed as part of a Hubble survey, the Small Magellanic cloud Investigation of Dust and Gas Evolution (SMIDGE).

Theoretical studies show it's hard to prevent those gas clouds from fragmenting to form a cluster of small stars, rather than collapsing into one large star, says physicist Dominik Schleicher of the University of Concepción in Chile.

A more recent variation of the «top - down» model says that there were extremely large gas clouds that fragmented into smaller clouds.

This star - forming region of ionised hydrogen gas is in the Large Magellanic Cloud, a small galaxy which neighbours the Milky Way.

Others theorize that the early universe broke first into colossal clumps that contained enough building materials to make structures on the grandest scale — great walls and sheets of millions of galaxies — that fragmented into increasingly smaller gas and clouds, ultimately resulting in individual galaxies.

The blue / white narrow beam indicates the small area of the DLA gas cloud probed by quasars, the wider red cone of light indicates the large area of the DLA probed by galaxies, which is a 100 million-fold increase in area.

From these assumptions, astronomers believe that the denser areas slowed the expansion slightly, allowing gas to accumulate in small protogalactic clouds.

Comets and comet clouds form early in the life span of a solar system, and are primarily composed of frozen gases, rocks and dust, coalescing out of clouds of smaller particles into the cosmic bodies with trademark tails we're familiar with.

As a comet approaches the Sun, a small fraction of the snowball (or nucleus) evaporates, forming a gas and dust cloud, called a coma, around the nucleus.

The team estimates that a background level of radiation, supplied by other galaxies, could delay gas in a galaxy (call it galaxy A) from fragmenting quickly into smaller clouds that would form stars.

Some researchers assume that a close system evolves into a wide system over millions of years due to dynamical interactions, but others guess that turbulence in a gas cloud fragments the cloud into smaller ones and stars are formed in each small cloud.

Near - infrared observations have detected small clouds of methane gas forming and dissipating in the upper reaches of Titan's atmosphere.

The crater - like composition forming the base layer of her smaller - scale canvas, Perfect Fifth, expressed in paler tones, calls to mind both the eye of a storm (in the style of Doppler weather radar) and an interstellar cloud of dust and gas on the verge of gravitational collapse.

The second factor is the insulating effect of the atmosphere of which well over 90 % results from atmospheric water in the form of clouds and water vapour with the remaining 10 % due primarily from CO2 and ozone with just a slightly detectable effect from methane and a trivial effect from all the other gases named in tyhe Kyoto Accord that is so small it can't even be detected on measurements of the Earth's radiative spectrum.

«The overall slow decrease of upwelling SW flux from the mid-1980's until the end of the 1990's and subsequent increase from 2000 onwards appear to caused, primarily, by changes in global cloud cover (although there is a small increase of cloud optical thickness after 2000) and is confirmed by the ERBS measurements... The overall slight rise (relative heating) of global total net flux at TOA between the 1980's and 1990's is confirmed in the tropics by the ERBS measurements and exceeds the estimated climate forcing changes (greenhouse gases and aerosols) for this period.

However, when we look at things spectrally, it does not matter if the gas we are looking through is localized in a small area or spread out through a larger area / volume (ignoring clouds of course).

Scavenging The process of removal of gases or small particles in the atmosphere by uptake (condensation, nucleation, impaction, or coagulation) into larger (cloud or precipitation) particles.

This illustration provided by Columbia University shows the supermassive black hole Sagittarius A, located at the center of the Milky Way Galaxy, surrounded by a cloud of dust and gas within which are 12 smaller black hole...