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:
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.
the gravitational force
The matter making up the medium does not move along with the wave
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.
Perpendicular to the direction the wave travels.
Hydrogen is the most abundant element in the interstellar medium, making up about 90% of its mass. Helium is the second most abundant element in the interstellar medium, with trace amounts of heavier elements such as carbon, oxygen, and others.
The interstellar medium is enriched with heavy elements by the remnants of supernova explosions. Supernovae are massive stellar explosions that release heavy elements such as carbon, oxygen, and iron into space, enriching the surrounding interstellar medium with these elements.
One consequence of dust in the interstellar medium is causing reddening of starlight due to scattering and absorption.
interstellar extinction. This phenomenon occurs due to the absorption and scattering of light by dust and gas particles present in the interstellar medium, leading to a decrease in the observed brightness of the starlight.
Brian M. Cancellieri has written: 'Interstellar medium' -- subject(s): Interstellar matter
Dust particles in the interstellar medium are made up of a variety of elements such as carbon, oxygen, silicon, and iron, similar to the composition of the gas. However, the dust particles can also contain complex molecules and compounds that are not present in the gas phase. Additionally, the physical and chemical properties of the dust particles can vary depending on their size, shape, and location within the interstellar medium.
Gravity.
Visible light against electrons combined with ionized hydrogen create the "reddening" effect in the Interstellar Medium.
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
W. B. Burton has written: 'The galactic interstellar medium' -- subject(s): Astrophysics, Interstellar matter, Molecular clouds
Cold atomic hydrogen
By using various wavelengths of light, such as infrared or radio waves, we can see through the interstellar medium. Different wavelengths can penetrate the dust and gas in space, allowing us to observe objects that may be hidden in visible light. Telescopes and instruments that are sensitive to these wavelengths help in studying the interstellar medium.