- What is the reflection nebula made of?
- What causes a reflection nebula?
- What is it like inside a nebula?
- What are the characteristics of an emission nebula?
- What are the 5 types of nebulae?
- How do emission and reflection nebulae differ quizlet?
- What is inside a planetary nebula?
- Are nebulae dangerous?
- Where are protostars most likely to form?
- Where does the light we see come from in an emission nebula quizlet?
- Are we in a nebula?
- What is the power source of the typical emission nebula?
- What color is an emission nebula?
- What are the two types of Nebula?
- What is Photoevaporation and how does it change the structure and appearance of an emission nebula?
- What causes a dark nebula?
- What is the source of red light seen in an emission nebula?
- What information does 21 cm radiation provide about the gas clouds?
What is the reflection nebula made of?
A reflection nebula is a cloud of gas and dust which does not create its own light, but instead shines by reflecting the light from nearby stars.
The brightest reflection nebulae are places where new stars are being formed.
Here the gas and dust is thick and shines by the light of new, bright stars..
What causes a reflection nebula?
Explanation: Reflection nebulae reflect light from a nearby star. Many small carbon grains in the nebula reflect the light. The blue color typical of reflection nebula is caused by blue light being more efficiently scattered by the carbon dust than red light.
What is it like inside a nebula?
The inside of a nebula would not look that much different from what we see when we look out at space. In the visible spectrum is may look like a faint haze or darkening of the stars. … These images are combined to highlight the nebula. Often you can see right through them in some wavelengths of light.
What are the characteristics of an emission nebula?
Emission nebulae are clouds of ionised gas that, as the name suggests, emit their own light at optical wavelengths. Their mass generally ranges from 100 to 10,000 solar masses and this material can be spread over a volume of less than light year to several hundred light years.
What are the 5 types of nebulae?
There are five types of cloudy or nebulous objects in the sky: planetary nebulae, emission nebulae, reflection nebulae, dark nebulae and supernova remnants.
How do emission and reflection nebulae differ quizlet?
What are emission nebulae? they glow when the atoms in the cloud are blast by light and radiation from a nearby massive star. … Reflection nebula: only glow because they are reflecting light from a nearby star because it is made mostly of dust.
What is inside a planetary nebula?
A planetary nebula, abbreviated as PN or plural PNe, is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives. … All planetary nebulae form at the end of the life of a star of intermediate mass, about 1-8 solar masses.
Are nebulae dangerous?
There’s nothing especially dangerous about the nebula specifically, deep space will kill your crew in time, if their ship is damaged. They need to escape this nebula to get to somewhere they can do long-term repairs on their ship.
Where are protostars most likely to form?
Protostar. Stars begin to form from clouds of gas in space. The cold temperatures and high densities (compared to elsewhere in space, but would be considered a vacuum on Earth) of these clouds allow gravity to overcome thermal pressure and start the gravitational collapse that will form a star.
Where does the light we see come from in an emission nebula quizlet?
– The light we see coming from the nebula is starlight that has been scattered and reflected by these dust grains. Reflection nebula are blue and emission nebula are red because why?
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 is the power source of the typical emission nebula?
An emission nebula is a nebula formed of ionized gases that emit light of various wavelengths. The most common source of ionization is high-energy ultraviolet photons emitted from a nearby hot star.
What color is an emission nebula?
redEmission 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. A fine example of an emission nebula is the Orion Nebula (M42).
What are the two types of Nebula?
Astronomers generally classify nebulae into two broad categories — bright and dark. Bright nebulae are close enough to nearby stars that they glow, although the method in which they produce that glow depends on two factors. The first is a nebula’s proximity to the star, and the second is the star’s temperature.
What is Photoevaporation and how does it change the structure and appearance of an emission nebula?
What is photoevaporation, and how does it change the structure and appearance of an emission nebula? … Photoevaporation: It is the erosion of gas and dust which is caused by the ultraviolet radiation coming from the nearby bright stars.
What causes a dark nebula?
The extinction of the light is caused by interstellar dust grains located in the coldest, densest parts of larger molecular clouds. … Dark clouds appear so because of sub-micrometre-sized dust particles, coated with frozen carbon monoxide and nitrogen, which effectively block the passage of light at visible wavelengths.
What is the source of red light seen in an emission nebula?
glowing hydrogenEmission nebulae are glowing clouds of interstellar gas which have been excited by some nearby energy source, usually a very hot star. The red light seen in many of these pictures is from glowing hydrogen.
What information does 21 cm radiation provide about the gas clouds?
At a wavelength of 21 cm, we see radiation from a thin layer of interstellar hydrogen gas in the Milky Way. At a wavelength of 2.6 mm, we see radiation from a very thin layer of cold, dense carbon monoxide gas in the Milky Way. These gas clouds are the star-forming regions.