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The interstellar medium is all the matter that exists between the stars in a galaxy. It mainly consists of gas (99%), with about 75% of this gas being in the form of molecular or atomic hydrogen, and about 25% in the form of helium. The other 1% is in the form of dust. The density of the interstellar medium is also very small: about 1 atom per cubic centimetre.
There are two main types of interstellar mediums:
- Cold clouds of neutral atomic or molecular hydrogen, which are the raw materials wherein stars can be formed if it becomes gravitationally unstable and collapses.
- Hot ionized hydrogen near hot young stars.
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoGas and Dust
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Why is there no sounds in space?
Actually, there is.There are interstellar gases that allow waves to travel. They're just less dense.Microphones can pick up sounds in space, and black holes generate sounds too. X-rays will happily carry sound away.No-one can hear it. It's 57 octaves lower than a middle C, and it makes a noise that is in the pitch of B flat.
A cloud of interstellar gas is held together by?
the gravitational force
Which of the following best describes a mechanical wave?
The matter making up the medium does not move along with the wave
What causes light rays to bend when they enter a new medium at an angle?
Light rays bend when they enter a new medium at an angle because they either slow down or speed up. They speed up the most if they are in a vacuum.
A transverse wave cause its medium to move in what direction?
Perpendicular to the direction the wave travels.
What is the most abundant element in the interstellar medium?
Hydrogen
The interstellar medium is enriched with heavy elements by the remnants of what?
The interstellar medium is enriched with heavy elements by the remnants of supernovas. A supernova is the spectacular explosion at the end of a stars life when it collapses in on itself.
What has the author Brian M Cancellieri written?
Brian M. Cancellieri has written: 'Interstellar medium' -- subject(s): Interstellar matter
Which of these is not a consequence of dust in the interstellar medium?
red light from the emission nebula
The dimming of starlight as it passes through the interstellar medium is called?
extinction
Which part of the interstellar matter produces reddening?
Visible light against electrons combined with ionized hydrogen create the "reddening" effect in the Interstellar Medium.
What has the author Ginevra Trinchieri written?
Ginevra Trinchieri has written: 'The environmental impact of intra-cluster medium on the interstellar medium in early type galaxies' -- subject(s): X ray astronomy, Galaxies, Interstellar matter
What makes an interstellar cloud collapse?
Gravity.
The dust particles have exactly the same chemical composition as the gases of the interstellar medium?
false.
What has the author W B Burton written?
W. B. Burton has written: 'The galactic interstellar medium' -- subject(s): Astrophysics, Interstellar matter, Molecular clouds
Radio waves of 21cm wavelength originate from which component of the interstellar medium?
Cold atomic hydrogen
Is the composition of the interstellar medium about the same now as it was when the Sun was formed about 4 and a half billion years ago Why or why not How can you find out what it was like then?
Get a time machine, search it up, or ask a scientist
