are stars made of dust?
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Star Formation Stars are born within the clouds of dust and scattered throughout most galaxies. A familiar example of such as a dust cloud is the Orion Nebula. Turbulence deep within these clouds gives rise to knots with sufficient mass that the gas and dust can begin to collapse under its own gravitational attraction.
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The sand-sized grains of dust sometimes slam into the thin air that surrounds the Earth, called the atmosphere, where they get hot very quickly. As the dust grains burn up, they leave bright streaks of light across the night sky. These streaks are called meteors, often nicknamed 'shooting stars' or 'falling stars'.
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The Short Answer: A nebula is a giant cloud of dust and gas in space. Some nebulae (more than one nebula) come from the gas and dust thrown out by the explosion of a dying star, such as a supernova. Other nebulae are regions where new stars are beginning to form. A nebula is a giant cloud of dust and gas in space.
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TNOs are thought to be similar in composition to comets, which are made mostly of ice, dust, and rock. Most of the 1000 or so TNOs known are hundreds of kilometres across.
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As nouns the difference between star and nebula is that star is any small luminous dot appearing in the cloudless portion of the night sky, especially with a fixed location relative to other such dots while nebula is (astronomy) a cloud in outer space consisting of gas or dust (eg a cloud formed after a star explodes).
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For low-mass stars (left hand side), after the helium has fused into carbon, the core collapses again. As the core collapses, the outer layers of the star are expelled. A planetary nebula is formed by the outer layers. ... Like low-mass stars, high-mass stars are born in nebulae and evolve and live in the Main Sequence.
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Answer 4: A star is generally defined by its ability to generate light via nuclear (fusion) reactions that convert hydrogen into helium. Planets are formed from the collection of gas and dust that surrounds a star.
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A "falling star" or a "shooting star" has nothing at all to do with a star! These amazing streaks of light you can sometimes see in the night sky are caused by tiny bits of dust and rock called meteoroids falling into the Earth's atmosphere and burning up. ... Meteors are commonly called falling stars or shooting stars.
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In some nebulae, stars form out of large clouds of gas and dust; once some stars have formed inside the cloud, their light illuminates the cloud, making it visible to us. These star formation regions are sites of emission and reflection nebulae, like the famous Orion Nebula shown in the picture on the right.
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Constellations contain stars that are easy to pick out in the night sky. Due to this, the constellations are made up of stars from within our own galaxy, the Milky Way, as they are close enough to be seen with the naked eye.
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The stars are not fixed, but are constantly moving. If you factor out the daily arcing motion of the stars across the sky due to the earth's rotation, you end up with a pattern of stars that seems to never change.
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But most of the protons in a neutron star convert into neutrons—neutron stars are made up of about 95 percent neutrons. When protons convert to neutrons, they release ubiquitous particles called neutrinos. Neutron stars are made in supernova explosions which are giant neutrino factories.
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Space isn't a pure vacuum and as we can see very clearly, there are molecular clouds, dust clouds, gas clouds and remnant atoms of heavy matter from stars that have gone supernova, so for these others to say that “no, there are no atoms in space”, clearly haven't looked at these objects.
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Stars shine by burning hydrogen into helium in their cores, and later in their lives create heavier elements. Most stars have small amounts of heavier elements like carbon, nitrogen, oxygen and iron, which were created by stars that existed before them.
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We are all made of stars: half our bodies' atoms 'formed beyond the Milky Way' Nearly half of the atoms that make up our bodies may have formed beyond the Milky Way and travelled to the solar system on intergalactic winds driven by giant exploding stars, astronomers claim.
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A nebula is a giant cloud of dust and gas in space. Some nebulae (more than one nebula) come from the gas and dust thrown out by the explosion of a dying star, such as a supernova. Other nebulae are regions where new stars are beginning to form. For this reason, some nebulae are called "star nurseries."
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A star is born when atoms of light elements are squeezed under enough pressure for their nuclei to undergo fusion. All stars are the result of a balance of forces: the force of gravity compresses atoms in interstellar gas until the fusion reactions begin.