What is a massive cloud of dust and gas called?
A nebula is an enormous cloud of dust and gas occupying the space between stars and acting as a nursery for new stars. The roots of the word come from Latin nebula, which means a “mist, vapor, fog, smoke, exhalation.” Nebulae are made up of dust, basic elements such as hydrogen and other ionized gases.
What is a diffuse mass of interstellar dust and gas?
The diffuse interstellar medium is composed of matter that fills the space between the stars. Ordinary matter is composed mainly of ionized hydrogen (H+), atomic (H1) and molecular (H2) and dust. Dust is less than 1% of the total mass of the interstellar medium which itself is only 10% of the luminous mass (ordinary matter) of the galaxy.
What is a cloud of dust and gas in space called?
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.
Are clouds made of gas and dust?
Neutral and ionized clouds are sometimes also called diffuse clouds. An interstellar cloud is formed by the gas and dust particles from a red giant in its later life.
What is the name of an interstellar cloud of gas and dust?
Synonyms, crossword answers and other related words for INTERSTELLAR CLOUD OF GAS [nebula]
What is interstellar gas called?
The interstellar medium is filled primarily with hydrogen gas. A relatively significant amount of helium has also been detected, along with smaller percentages of such substances as calcium, sodium, water, ammonia, and formaldehyde.
What is an interstellar cloud also known as?
These gas clouds result in one of the most common forms of emission nebulae and are usually referred to as HII regions, again following the naming convention astronomers use for ionised hydrogen (HII, pronounced H-two).
What is an interstellar molecular cloud?
molecular cloud, also called dark nebula, interstellar clump or cloud that is opaque because of its internal dust grains. The form of such dark clouds is very irregular: they have no clearly defined outer boundaries and sometimes take on convoluted serpentine shapes because of turbulence.
What is space dust called?
Also called cosmic dust, a fleck of space dust is usually smaller than a grain of sand and is made of rock, ice, minerals or organic compounds. Scientists can study cosmic dust to learn about how it formed and how the universe recycles material.Mar 28, 2019
Is interstellar cloud and nebula the same thing?
nebulae, nebulæ or nebulas) is a distinct body of interstellar clouds (which can consist of cosmic dust, hydrogen, helium, molecular clouds; possibly as ionized gases). Originally, the term was used to describe any diffused astronomical object, including galaxies beyond the Milky Way.
What is the meaning of dust cloud?
(dʌst klaʊd) a large cloud of dust that hangs in the air. A huge dust cloud hung over the city. A meteorite may have hit the Earth, sending up dust clouds which blanketed out sunlight for years. Collins English Dictionary.
What is gaseous cloud?
A mass of gaseous material in space; specifically one from which a planet, solar system, or other celestial object is formed.
What is the name of the cloud of gas and dust in outer space?
A nebula is a massive cloud of gas and dust in outer space. A nebula is sometimes the birthplace of stars, such as the Orion Nebula where new stars — a youthful million years old — are still forming.
What is the interstellar material?
Interstellar Dust and Gas. Much of the space between the stars is filled with atomic and molecular gas (primarily hydrogen and helium ) and tiny pieces of solid particles or dust (composed mainly of carbon, silicon and oxygen). In some places this interstellar material is very dense, forming nebulas.
What is diffuse cloud?
diffuse cloud. A small atomic (H I) cloud that has too low a column density for it to be observed visually. Diffuse clouds constitute the bulk of the cold neutral medium in the three-phase description of the interstellar medium.
Why is the interstellar medium lumpy?
This is due to the fact that the density distribution of the interstellar medium is lumpy. The region behind the shock wave is low in density, but very hot. Since its density is low, it cools at a very slow pace. The lumpy, foam-like nature to the interstellar medium is tracing the past history of supernovae.
