Sentences with phrase «formed by clouds»
The researchers conclude that galaxies may thus be formed by clouds of gas that are bombarded by streams of matter and energy from black holes — which are building their own homes.
https://www.scientificamerican.com/ Not exact matches
By 2007 dark clouds were forming over the U.S..
From my personal experience of loss as well as from my work as a counselor, my hope for women who've suffered through miscarriage, infertility, or other forms of loss is that we will see our stories accurately rather than through a cloud by condemnation.
Further, the Jewish apocalyptic texts would then have had to lose all trace of this form of the conception, for in no other such text does the Son of man «come with the clouds», except for this one instance preserved by Christians, and, finally, the Christian tradition would have had to be indebted to this one Jewish saying for the features most characteristic of the specifically Christian expectation.
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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.
Infrared radiation passes through interstellar dust much more easily than visible light, so by looking at the infrared light from a galaxy we can learn about the new stars forming within the clouds of dust and gas.
The tracks visible in these clouds off the coasts of France and Spain form when small, airborne sulfate particles emitted by ships and airplanes act as cloud condensation nuclei, or «seeds.»
By observing many background stars spread across the sky, astronomers can map ices within the cloud's entire expanse and locate where different ices form.
That's at least 100 times larger than the nanodiamonds that form when planetary objects collide, and it's far larger than diamonds that form by condensing from carbon vapor inside clouds of interplanetary gas and dust.
Mathematical models, combined with our understanding of how planets and comets form, suggest that the objects in the Oort cloud must have been flung there by one of the giant planets closer to the sun.
Planetary nebulae, which got their name after being misidentified by early astronomers, are formed when an ageing star weighing up to eight times the mass of the sun ejects its outer layers as clouds of luminous gas (see Why stars go out in a blaze of glory).
But it left an open question: Were airborne microbes forming ice in the clouds, or were they merely getting mopped up by snowflakes as they fell to Earth?
Moons are generally thought to form in one of two ways — either by coalescing from the same cloud of debris as their parent planet, or as wandering objects captured by the parent's gravitational pull.
Although the ions are originally involved in the development of almost one third of all newly formed particles, the concentration of the large cloud condensation nuclei in the course of the 11 - year cycle changes by only 0.1 percent — not enough to have any sizeable influence on the climate.
The team that made this discovery, led by Yale University astronomer Tabetha Boyajian — the star's namesake — suggested a variety of explanations for its strange behavior, including that the star itself was variable, that it was surrounded by clouds of dust or dusty comets, or that planets around it had collided or were still forming.
The difference in lightning activity can't be explained by changes in the weather, according to the study's authors, who conclude that aerosol particles emitted in ship exhaust are changing how storm clouds form over the ocean.
The Large Magellanic Cloud is encircled by bright young stars that are likely to have formed after another galaxy powered past, compressing gas
The diffuse gas clouds backlit by J1717 - 337 and NRAO530 show chemical composition similar to the gas in active star forming regions, indicating that the diffuse gas is bathed in strong ultraviolet light.
I remember being fascinated by clouds when I was young, but I never suspected that I would one day be working on these problems, trying to solve the puzzle of how clouds are actually formed.
At roughly 3000 °C, it lacks a surface but has an outer edge marked by clouds of molten rock that form silica raindrops.
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 newly minted francium is captured in the glass chamber shown here, where it is surrounded by a magnetic field and cooled by lasers until it condenses to form a cloud less than a tenth of an inch in diameter.
Nevertheless, those modest - size black holes left a big mark by performing a form of stellar birth control: Radiation from the trickle of material falling into the holes heated surrounding clouds of gas to about 5,000 degrees Fahrenheit, so hot that the gas could no longer easily coalesce.
The nebula was created by the star, which is losing part of its mass out into the surrounding space, forming a cloud of gas and dust as the material cools.
Scientists figured out more than a decade ago how to make this specialized form of light through a process known as «high harmonic generation,» or HHG, which shifts laser light to much shorter wavelengths and shorter pulses by shining it through a cloud of gas.
The science team, led by chemist Brett McGuire at the National Radio Astronomy Observatory (NRAO) in Charlottesville, Virginia, detected this molecule's telltale radio signature coming from a nearby star - forming nebula known as the Taurus Molecular Cloud 1 (TCM - 1), which is about 430 light - years from Earth.
Aoki says the star likely formed from a gas cloud enriched by a pair - instability explosion, which is 10 to 100 times more violent than an ordinary supernova.
Any clouds that form scatter laser light; this scattering is then detected and recorded by computers, which display the results — the size, number, and composition of cloud particles — for scientists outside the chamber.
By analyzing this data over the following six months, the researchers found that clouds that grew at the lowest temperatures required extremely high relative humidity in order for water vapor to form an ice crystal around a dust particle.
The lead surrounding the stars — which was part of the original cloud of gas and dust from which these stars formed, not generated by reactions in the evolving stars themselves — may be dispersed within an atmospheric layer as much as 100 kilometers thick (depicted patchily in pink) that altogether weighs up to 100 billion metric tons.
Although this looks like a single nebula, NSF's Gemini South Observatory revealed it is actually two separate gas and dust clouds formed by different types of supernova explosions.
Now, a new, computer simulation — based study suggests that these giants were formed and fed by massive clouds of gas sloshing around in the aftermath of the big bang.
And because the first dust clouds would have formed with the star nearly 100 million years ago, Chen and Jura argue that «this disk must be continually replenished by asteroid collisions.»
Now a team led by Fabio Pacucci at Scuola Normale Superiore in Pisa, Italy, thinks it has found two examples of the latter: baby black holes that formed directly from a collapsing gas cloud without becoming a star first.
The acknowledged role of sunspots and cosmic rays in forming clouds has been fertile ground for climate deniers, who have cast doubt on whether anthropogenic climate change (in other words, change caused by humans) is occurring at all.
A new star is formed by gravitational contraction of an interstellar molecular cloud consisting of gas and dust.
And they wanted to test their theory on the clouds that do form in this region — warm convective clouds that are fuelled by the ocean's moisture.
The ice was formed by the precipitation that fell as snow from the clouds and remained year after year, gradually being compressed into ice.
Observations show when water vapour is taken up by the atmosphere through evaporation, the updraughts can either rise to 15 km to form clouds that produce heavy rains or rise just a few kilometres before returning to the surface without forming rain clouds.
A new generation of sensitive, high - resolution telescopes will help resolve the debate by probing both dust clouds and the protoplanetary disks from which asteroids, comets, and planets form.
These accelerators work by shooting pulses of intense laser light into plasma to create a wave rippling through the cloud of ionised gas, leaving a wake of electrons akin to those that form behind a speedboat in water.
Cold fronts carried by this airstream then interact with warm tropical air and form cloud banks over northwestern Australia, which travel across the country towards the southeast bringing winter rain.
Every Kuiper belt object and Oort cloud entity is a geologic fossil, preserved at low temperatures, largely unaltered by time, and made up of the material from which the solar system formed 4.5 billion years ago.
The hue may be formed by radiation from space splitting molecules in the planet's clouds, which then combine to form red compounds.
Dense pockets of material in these clouds collapse under their own gravity and grow by accumulating more and more star - forming gas from their parent clouds.
Every Kuiper belt object and Oort cloud entity is a geologic fossil, preserved at low temperatures, largely unaltered by time, and made up of the material from which the solar system formed.
Although the detection on 67P / Churyumov - Gerasimenko is now questioned by some, methyl isocyanate was also detected in two star - forming clouds, Orion KL and Sagittarius B2 (N), in 2015 and 2016, but these are hot environments full of very massive stars, very unlike the situation of the early sun.
The artist's famous drips and swirls create fractal patterns, similar to those formed in nature by trees, clouds and coastlines
Now a team led by Takashi Hosokawa at NASA's Jet Propulsion Laboratory (JPL) in Pasadena, California, has used computer simulations to show the gas clouds from which the stars formed would have been much hotter than thought.