- What is a planetary nebula made of?
- What are the 5 types of nebulae?
- Are we in a nebula?
- What is the most beautiful star?
- How do Nebula die?
- What is dust in astronomy?
- What color is the hottest star?
- Is our star white?
- Which nebula is Earth in?
- What is the most beautiful nebula?
- How many stars can a nebula produce?
- What is a white star?
- What is it like inside a nebula?
- What causes a dark nebula?
- What does a nebula really look like?
- Are nebulae dangerous?
- Who found the first nebula?
- What is the biggest nebula in the universe?
- How hot is a nebula?
- What would happen if you went into a nebula?
- Is a nebula hot or cold?
What is a planetary nebula made of?
A planetary nebula is an astronomical object consisting of a glowing shell of gas and plasma formed by certain types of stars at the end of their lives.
They are in fact unrelated to planets; the name originates from a supposed similarity in appearance to giant planets..
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.
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 most beautiful star?
Betelgeuse StarBetelgeuse Star – one of the most beautiful stars in the night sky.
How do Nebula die?
The birthplace of a star is a huge, cold cloud of gas and dust, nebulae/nebulas. These clouds begin to shrink, a result of their own gravity. As a cloud begins to shrink it gets smaller and the cloud breaks up into clumps. … When a star can no longer maintain this balance, it dies.
What is dust in astronomy?
Cosmic dust consists of tiny particles of solid material floating around in the space between the stars. It is not the same as the dust you find in your house but more like smoke with small particles varying from collections of just a few molecules to grains of 0.1 mm in size.
What color is the hottest star?
blueThe color of a star is linked to its surface temperature. The hotter the star, the shorter the wavelength of light it will emit. The hottest ones are blue or blue-white, which are shorter wavelengths of light. Cooler ones are red or red-brown, which are longer wavelengths.
Is our star white?
Our Sun is white, and it would look white if you looked at it from space. The atmosphere scatters sunlight, especially light of shorter wavelength, i.e. blue light. So the Sun appears slightly orange-ish as a result. The missing blue light isn’t really missing at all, it’s what makes the sky blue!
Which nebula is Earth in?
Nebulae exist in the space between the stars—also known as interstellar space. The closest known nebula to Earth is called the Helix Nebula.
What is the most beautiful nebula?
Ten of the Most Unusual Stellar Nebulae“The Hand of God:”The Egg Nebula. … V838 Monoceros. … Calabash Nebula. … The Necklace Nebula: … Barnard 68. … The Waterfall Nebula. … NGC 2438. This abnormal-looking celestial region is NGC 2438, a planetary nebula that can be found about 3,000 light-years from Earth (in the constellation of Puppis). … More items…•
How many stars can a nebula produce?
Right now, we know of about 3,000 planetary nebulae in our galaxy, the Milky Way, out of roughly 200 billion stars. Most of them are near the center of our galaxy. They come in many shapes, but most are spherical, elliptical, or bipolar.
What is a white star?
Definition of white star. 1 : a star of spectral type A or F having a moderate surface temperature and a white or yellowish color. 2a : an annual morning glory (Ipomoea lacunosa) of the southern U.S. with star-shaped leaves and small white or purplish flowers.
What is it like inside a nebula?
Nebulae are pretty only when they are hundreds of light-years away. They look thick and cloudy only because you see the structures of light-years in thickness. Once you’re close to them, their light spreads out so much that you can’t see them. You could fly your spaceship right into the nebula and never even know it.
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 does a nebula really look like?
Nebulae are astoundingly large accumulations of dust and gas, sometimes spanning tens to thousands of light-years across. Moreover, most of Hubble’s nebulae images depict a saturated collection of colorful clouds.
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.
Who found the first nebula?
No planets involved The first planetary nebula to be discovered was the Dumbbell Nebula, M27, by Charles Messier in 1764. He eventually added four to his catalog of astronomical objects. In 1790, Herschel found NGC 1514, a planetary nebula with a bright central star.
What is the biggest nebula in the universe?
Tarantula NebulaLargest Nebula: The Tarantula Nebula Both the largest known nebula and most active star-forming region in our local galactic neighborhood, the Tarantula Nebula stretches for more than 1,800 light-years at its longest span.
How hot is a nebula?
Physical and spectral properties of planetary nebulae The temperature of the gas in the nebula is about 10,000 degrees Celsius, and the central stars of planetary nebulae are among the hottest stars in the Universe, with temperature in the range of 25,000 to over 200,000 degrees Celsius.
What would happen if you went into a nebula?
Traveling through one would be almost indistinguishable from traveling anywhere else in space. You may not even notice it with unaided eyes. On a dark night, you can see the Orion Nebula as a very faint patch of gray light. Amazingly, getting closer to the nebula would not increase its brightness per square arc second.
Is a nebula hot or cold?
As you know, nebulae are collections of gas and or dust in space. Some nebula which have star forming regions in them can become very hot ( 10,000 k), but without the stars, the nebula will be very cold.