a nebula is formed when the remains of a star are left over and a gravtiational force pulls together dust and gas to create the first stage of a star cylce which they begin as nebulae.
http://wiki.answers.com/Q/How_is_a_nebula_formed
|
|
Nebula - Wikipedia, the free encyclopedia
|
|
A nebula (from Latin: "cloud" ; pl. nebulae or nebulæ , with ligature or nebulas ) is an interstellar cloud of dust, hydrogen gas, helium gas and plasma. Originally nebula was a general n...
en.wikipedia.org/wiki/Nebula
|
|
Nebular hypothesis - Wikipedia, the free encyclopedia
|
|
In cosmogony, the nebular hypothesis is the most widely accepted model explaining the formation and evolution of the Solar System. It was first proposed in 1734 by Emanuel Swedenborg.
en.wikipedia.org/wiki/Nebular_hypothesis
|
|
|
A planetary nebula is a nebula formed from by a shell of gas which was ejected from a certain kind of extremely hot star (a red giant or supergiant). As the giant star explodes, the core of the star is exposed. Planetary nebulae have nothing to do with planets.
|
www.enchantedlearning.com/subjects/astronomy/stars/nebu...
www.enchantedlearning.com/subjects/astronomy/stars/nebulae.shtml
|
|
|
|
Learn How Big Space Is With KidsAstronomy.com ... Although this third type of nebulae is called a planetary nebulae, it actually has nothing to do with planets. A planetary nebulae is formed when a dying sun sized star begins to shed its outer layers.
|
www.kidsastronomy.com/nebulae.htm
www.kidsastronomy.com/nebulae.htm
|
|
|
|
Nebulas are large clouds of gas in space often measuring light years in size and are made up of hydrogen, helium and star dust. Nebulas are formed in two ways: (1) from the creation of the solar system or two from the gas left behind from stars that have exploded in a super nova or nova.
|
www.kinderscience.com/nebulas.htm
www.kinderscience.com/nebulas.htm
|
|
|
Re: How was the horsehead nebula formed Date: Mon Dec 21 11:27:18 1998; Posted By: Mike Francis, Other (pls. specify below), Physics/Astronomy, Self employed/ Amazing Discoveries Productions; Area of science: Astronomy;
|
www.madsci.org/posts/archives/dec98/914378804.As.r.html
|
|
Subject: How was the horsehead nebula formed ... Date: Sun Dec 13 16:01:30 1998; Posted by sarah ; Grade level: 4-6; School: vally corsing; City: woodbury State/Province: MN; Country: USA; Area of science: Astronomy; ID: 913586490.As...
|
www.madsci.org/posts/archives/dec98/914378804.As.q.html
|
|
The nebula formed from the death throes of a red giant star that was slightly hotter than the Sun and is located about 1370 light years distant. Although hidden by dust, the star inside the centre of the nebula is still active, shooting fast jets of material from its poles.
|
www.abc.net.au/science/articles/2009/06/09/2593270.htm
|
|
