Emission Nebulae
: These nebulae emit their own light because hydrogen atoms are excited by the powerful ultraviolet light from nearby stars; the hydrogen is ionized and generates the nebula’s brightness. This is the most common type of nebula.
What is the most common nebula in the galaxy?
Perhaps the most well known nebulae is
the Orion Nebula
, also known as M42. It is one of the very few that can be seen with the naked eye. It is a bright emission nebula over 30 light-years in diameter.
What are the 2 types of nebula?
There are five types of cloudy or nebulous objects in the sky:
planetary nebulae, emission nebulae, reflection nebulae, dark nebulae and supernova remnants
.
What are the 4 nebulae?
The four types of nebulae are:
emission, reflection, dark, and planetary
. Primarily the birth place of stars, nebulae are clouds of gas and dust in space.
Which type of nebula does all star formation occur in?
Star-forming regions are a class of
emission nebula
associated with giant molecular clouds. These form as a molecular cloud collapses under its own weight, producing stars. Massive stars may form in the center, and their ultraviolet radiation ionizes the surrounding gas, making it visible at optical wavelengths.
What creates a nebula?
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
. They either form through clouds of cold interstellar gas and dust or through the aftermath of a supernova.
What causes a nebula?
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. For this reason, some nebulae are called “star nurseries.”
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.
Is Earth in a nebula?
The Earth was formed from the nebula that produced the Solar System
. It is almost universally accepted that the Sun, the planets and their satellites, the asteroids, and the comets of the Oort ‘cloud’ grew from a cloud of gas and dust that contracted under its own gravity.
What are the 4 types of galaxies?
In 1936, Hubble debuted a way to classify galaxies, grouping them into four main types:
spiral galaxies, lenticular galaxies, elliptical galaxies, and irregular galaxies
.
Is nebula worth paying for?
As it stands, due to an overall lack of content, parental controls, and tools, Nebula is far from being useful to either viewers or creators, and is
definitely not worth a $5 subscription fee
.
What happens when a nebula dies?
Eventually, the clump of dust and gas gets so big that
it collapses from its own gravity
. The collapse causes the material at the center of the cloud to heat up-and this hot core is the beginning of a star.
What is smaller than a nebula?
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.
Which nebula is shown in the given picture?
The nebula shown in the picture is
NGC 6302
(popularly known as the Butterfly Nebula, Bug Nebula or Caldwell 69) which is a bipolar planetary nebula. It is located in the constellation Scorpius. The structure of Butterfly Nebula is one of the most complex ever seen in any planetary nebula.
Can we see nebula in other galaxies?
The answer
is no
– unless you count seeing the combined light of many billions of stars. From the Northern Hemisphere, the only galaxy outside our Milky Way that’s easily visible to the eye is the great galaxy in the constellation Andromeda, also known as M31.
Which is known as the biggest star in the universe?
The largest known star in the universe is
UY Scuti
, a hypergiant with a radius around 1,700 times larger than the sun. And it’s not alone in dwarfing Earth’s dominant star.
