What is an interstellar cloud called?
6 letter answer(s) to interstellar cloud NEBULA. (pathology) a faint cloudy spot on the cornea. an immense cloud of gas (mainly hydrogen) and dust in interstellar space.
What is in a molecular cloud?
Molecular clouds consist mainly of gas and dust but contain many stars as well. The central regions of these clouds are completely hidden from view by dust and would be undetectable except for the far-infrared thermal emission from dust grains and the microwave emissions from the constituent molecules.
What is a molecular cloud quizlet?
Molecular cloud is a cool, dense interstellar cloud in which the low temperature allow hydrogen to pass up into hydrogen molecules.
What is an interstellar cloud quizlet?
the space between the stars (dust and gas) dense interstellar clouds are the. birth place os stars. dark clouds alter and absorb the light from. stars behind them.
Where are interstellar clouds?
An interstellar cloud is generally an accumulation of gas, plasma, and dust in our and other galaxies. Put differently, an interstellar cloud is a denser-than-average region of the interstellar medium (ISM), the matter and radiation that exists in the space between the star systems in a galaxy.
What is the name of an interstellar cloud of gas and dust?
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.
What does a molecular cloud do?
A molecular cloud, sometimes called a stellar nursery (if star formation is occurring within), is a type of interstellar cloud, the density and size of which permit absorption nebulae, the formation of molecules (most commonly molecular hydrogen, H2), and the formation of H II regions.
Where are molecular clouds found?
spiral galaxies
Star formation takes place exclusively within molecular clouds and observations have shown that they are located primarily in the disk of spiral galaxies and the active regions of irregular galaxies. Since molecular clouds are cold and dark, we cannot observe them directly in visible light.
Where does the term molecular clouds come from quizlet?
Stars form in giant molecular clouds. They are given this name because they are cold and dense enough for hydrogen to form hydrogen molecules, forming “molecular clouds”, of which stars form within.
Why do stars form from molecular clouds?
Summary: Stars form in cold, dense regions of space called molecular clouds. When the force of gravity pulling in on the cloud is greater than the strength of internal pressure pushing out, the cloud collapses into a protostar.
What is an interstellar cloud what does it have to do with the solar system?
Fast Facts. The Local Interstellar Cloud is a “bubble” in interstellar space. The solar system has been moving through the cloud and a local region called “The Local Fluff” for tens of thousands of years. These caverns can be caused by the strong winds from young stars and stellar explosions called supernovae.
What is the most common element in the interstellar medium quizlet?
The most abundant elements in the interstellar gas are hydrogen and helium. About 1% of the interstellar matter is in the form of solid interstellar dust grains.
What caused the interstellar cloud to collapse?
In stellar physics, the Jeans instability causes the collapse of interstellar gas clouds and subsequent star formation, named after James Jeans. It occurs when the internal gas pressure is not strong enough to prevent gravitational collapse of a region filled with matter.
What is a giant molecular cloud –Assembly of molecular gas?
A vast assemblage of molecular gas that has more than 10 thousand times the mass of the Sun is called a giant molecular cloud ( GMC ). GMCs are around 15 to 600 light-years in diameter (5 to 200 parsecs) and typical masses of 10 thousand to 10 million solar masses.
What is molecular cloud?
Molecular cloud. A molecular cloud is a kind of cloud in space. It has enough density and size so that molecules can form, usually molecules of hydrogen (H 2).