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What is the mass of a stellar nebula?
Compared with diffuse nebulae (see H II region), planetary nebulae are small objects, having a radius typically of 1 light-year and containing a mass of gas of about 0.3 solar mass.
What is a very huge mass of gas and dust?
Nebula is a very huge mass of gas and dust.
What is stellar nebula?
1 : the nebulosity surrounding a star : a star’s shell or envelope of nebulosity.
What is the difference between bright and dark nebulae?
Bright nebulae appear as faintly luminous glowing surfaces; they either emit their own light or reflect the light of nearby stars. Dark nebulae are very dense and cold molecular clouds; they contain about half of all interstellar material.
Are we in a nebula?
This depends a lot on exactly how you define a nebulae, but we are actually in a very dense region of the interstellar medium, the local interstellar cloud. Observing it directly from Earth is very difficult, due to sunlight and the solar wind, but its magnetic field has been measured by the Voyager 2 probe.
What does a nebula look like?
Most nebulae – clouds of interstellar gas and dust – are difficult if not impossible to see with the unaided eye or even binoculars. But the Orion Nebula is in a class nearly all by itself. It’s visible to the unaided eye on a dark, moonless night. To me, it looks like a star encased in a globe of luminescent fog.
What are huge clouds of gas and dust floating in space 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.
Is nebula bigger than Galaxy?
Simply put, the main difference between galaxies and nebulae are an extreme difference in size, as well as their basic structure. A nebula is a cloud of dust and gas, usually tens to hundreds of light years across. A galaxy is much larger — usually thousands to hundreds of thousands of light years across.
What causes nebula?
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 are the 2 types of nebula?
Visible light nebulae may be divided into emission nebulae, which emit spectral line radiation from excited or ionized gas (mostly ionized hydrogen); they are often called H II regions, H II referring to ionized hydrogen), and reflection nebulae which are visible primarily due to the light they reflect.
Are nebulae actually colorful?
Emission nebulae tend to be red in color because of the abundance of hydrogen. Additional colors, such as blue and green, can be produced by the atoms of other elements, but hydrogen is almost always the most abundant. Dark Nebula – A dark nebula is a cloud of dust that blocks the light from objects behind it.
What is it like inside a nebula?
Inside a nebula probably looks just as dark, with occasional hues of color around visible stars. Like a cloud; think of flying through a cloud in a airplane vs. looking up at one from the ground. It’s the same effect on galaxies.
How is the molar mass of an ideal gas determined?
The molar mass of an ideal gas can be determined using yet another derivation of the Ideal Gas Law: P V = nRT P V = n R T. We can write n, number of moles, as follows:
What is the temperature of a giant ball of gas and dust?
Eventually, enough gas and dust has been collected into a giant ball that, at the center of the ball, the temperature (from all the gas and dust bumping into each other under the great pressure of the surrounding material) reaches 15 million degrees or so.
How does the color of a star depend on its mass?
The color of the star depends on the surface temperature of the star. And its temperature depends, again, on how much gas and dust were accumulated during formation. The more mass a star starts out with, the brighter and hotter it will be. For a star, everything depends on its mass.
When does a ball of gas and dust become a star?
When the released energy reaches the outer layers of the ball of gas and dust, it moves off into space in the form of electromagnetic radiation. The ball, now a star, begins to shine.