How does a planetary nebula form?

Answer 1

A planetary nebula is created when a star blows off its outer layers after it has run out of fuel to burn. These outer layers of gas expand into space, forming a nebula, which is often the shape of a ring or bubble. About 200 years ago, William Herschel called these spherical clouds planetary nebulae because they were round like the planets. At the center of a planetary nebula, the glowing, leftover central part of the star from which it came, can usually still be seen.

A planetary nebula is a cloud consisting of the outer layers of gas which have been ejected after the death of a star about the mass of the Sun.

Answer 2

"Where stars are born.' is one correct Answer. Star Formations need Nebulous Sources.

Actually they are mainly the remnants of novae or supernovae STELLAR EXPLOSIONS.

Answer 3

There are several stages involved in the making of a planetary nebula. Take the sun for example, which is of course a star. Eventually the sun will run out of "fuel" (hydrogen) and grow to a red giant, and then when it's completely out "fuel" the sun will loose it's blown up outter layers and that layer will form a ring of gas around the remaining star. After that it will just be a white dwarf left, doomed to a slow death!

Now, this was a long story short. But I think you can read more about it on some other sites!

Answer 4

Bright nebulae that may somewhat resemble planets when seen by telescope but are in fact expanding clouds of fluorescent gas outside the solar system. Their origins are very largely the death throes of a star somewhat similar to our sun but evolution and variance among planetary nebulae have recently become topics of great interest to astronomers, as non-optical astronomy (x-rays, ultraviolet astronomy, etc) has shown them to be considerably more complex than originally thought. One thing astronomers do agree on is that their average "life" is about 10,000 years, a mere "snapshot" in the life of the galaxy.

Answer 5

Planetary systems probably form from the gravitational collapse of a molecular cloud, also known as a nebula. As the nebula condenses the gases clump together in the center to form a star. The remaining debris orbits the newly formed star and clumps together (by the force of gravity) to form planets and other objects such as asteroids and comets.

Answer 6

A nebula (from Latin: "cloud";[1] pl. nebulae or nebulas) is an interstellar cloud of dust, hydrogen gas, helium gas and other ionized gases. Nebulae often are star-forming regions in which gas, dust and other materials "clump" together to form larger masses, which attract further matter, that eventually become big enough to form stars. The remaining materials then form planets, and other planetary system objects.

Answer 7

it is not the it is a stellar nebula considering that there are multiple stellar nebulas in the universe. what a steller nebula is though is dust and such maing a nebula then when the nebula is strong enough to make a star is creates a prostar, then it is either a massive star or a non massive star. soon they will either turn into a super giant or a red giant. then either the star will explode or simply poof then either it is a white dwarf a neutron star or a black hole. the end

Answer 8

Two names for a planetary nebula are NGC 246 and NGC 7078.

Many of these have nice names, not just "boring" catalogue numbers.

There's the "Owl Nebula", for example (also known as NGC 3587).

Answer 9

Gravity= the wrong answer! Its a supernova i know this because i just took a science quiz and it was A SUPERNOVA!

Gravity= wrong answer

Supernova= CORRECT ANSWER

Answer 10

A nebula is the remnants of a dead star. When a star explodes, it leaves dust behind. From that a new star is formed, and planets can be formed along with it.