The Birth of Light
What is it?
Where are they?
- The Pillars of Creation-they may already be destroyed as what we are seeing through the telescopes is what happened up to 6000 years ago, we are seeing things fro so long ago because they light from that molecular cloud takes so long to travel to earth
- A cloud in a main spiral of the Milky Way Galaxy called the Perseus Arm-this molecular cloud creates stars eight times as large as our sun
- R136 that resides in the 30 Doradus Nebula-is the largest star nursery that is close to us, and creates icy blue stars which are the largest know stars in the galaxy
- The Orion Molecular Cloud Complex-is about 1300 light-years away
Perseus Arm Molecular Cloud
About 6200 light-years away
This cloud has formed the largest stars known to man which are icy blue
Orion Molecular Cloud Complex
About 1300 light-years away
How is is formed, destroyed, and Who first discovered it?
They were first discovered by William and Caroline Hershel in the lare eighteenth century. They discovered it by using visual telescopic observations. A century later photographic evidence taken and molecular clouds were officially established.
Who discovered what it truly does?
Pillars of Creation
A Molecular Cloud photo captured by the Hubble telescope
A stage in a star's Birth
The could and outlying particles are being shaped into a disk.
Coalsack seen from Earth
This photo was taken by a man with the name of John McDonald while on a trip to Costa Rica.
Why they are important
The forming of a Star
- Starts with a molecular cloud( Without the cloud there would be no stars at all)
- Then gravity collages that part the cloud
- The cloud starts to flatten into a disk shape, while a prostar is formed in the heated core
- The prostar becomes a ful fledged star, and the disk around the star stars forming protoplanets
- The protoplanets begin to collect more debris and form their own orbits around the star
- The new stellar system is born, with plants orbiting the star
- what molecular clouds are made of
- what they do
- the basic parts of a molecular cloud
- how they are created
- learned of the Pillars of Creation
- tells of how dense they molecular cloud is
- How the pillars and other molecular clouds can be destroyed
- what we see is what happened 6000 years ago
- Bok Globules (another name for molecular clouds)
- multiple stars can be born in a core
- appear as dense clouds darker than the stars when looked at with the naked eye
- the size of molecular clouds
- gravity is the force pushing the cloud together
- the core heats up as gravity forces inward
- a prostar is created and the part of the cloud will start to spin
- Nuclear Fusion is the force keeping the star from collapsing
- photo of the Orion Molecular CLoud Complex
- that it is indeed a molecular cloud
- it is 1300 light years away
- also called a dark nebula
- the clouds are opaque
- they are visible to the naked eye
- Coalsak Molecular cloud
- the clouds magnetic field support its from the affects of gravity
- the largest star nursey near by
- produces the largest stars which are blue
- photo of R136
- They stars will "pop-off like a string of firecrackers in a few million years"
- they are also the birth place of planets
- the clouds are very cold to start of having a temperature of -263 to -223 degrees Celsius
- infrared rays can see through the cloud
- The Hubble space telescope first used infrared lights to view molecular clouds
- example of how the pillars are being destroyed
- why they are in the shape of pillars
- the spitzer space telescope took photos of the pillars
- William and Carol Hershel first discovered them in the sky in the eighteenth century
- the real first photo was taken by Barnard in the nineteenth century
- clouds are majorly important as they formed all the stars in our galaxy
- how the clouds first start creating stars
- they either collide
- or the pressure from a supernova helps the cloud first start forming clouds
- several stars can be formed at a time
- Perseus arm photo
- It is one of the milky way galaxies spiral arms
- creating stars eight times larger than our sun
Citations in MLA format
Anissimov, Michael. "What is a Stellar Nursery? ." wiseGEEK. N.p., n.d. Web. 7 May 2013. <http://www.wisegeek.com/what-is-a-stellar-nursery.htm>.
Astrophysical Journal Letters, . "Milky Way's Vast Molecular Clouds --Creating the Chemical Precursors of DNA." dailygalaxy . The National Radio Astronomy Observatory, 1 May 2013. Web. 18 May 2013. <http://www.dailygalaxy.com/my_weblog/2013/05/milky-ways-vast-molecular-clouds-where-some-400-billion-stars-and-dna-molecules-are-incubating.html>.
Blake, Leesa, et al. On Science 9. Canada: McGraw-Hill Ryerson Limited, 2009. Print.
Brill, Richard. "How is a star born?." Scientific America. Nature America Inc, 6 Dec. 1999. Web. 7 May 2013. <http://www.scientificamerican.com/article.cfm?id=how-is-a-star-born>.
Cain, Fraser. "How Does a Star Form." Universetoday. n.p., 26 Jan. 2009. Web. 19 May 2013. <http://www.universetoday.com/24190/how-does-a-star-form/>.
Greg. "The Orion Molecular Cloud Complex." Outerspaceuniverse. N.p., 14 Jan. 2010. Web. 16 May 2013. <http://www.outerspaceuniverse.org/the-orion-molecular-cloud-complex.html>.
Harvard-Smithsonian, Center. "Bok Glodules." Physorg. N.p., 4 June 2010. Web. 7 May 2013. <http://phys.org/news194877369.html>.
Keller, Jim. "Molecular Clouds." Cool Cozmos. n.p., 18 Oct. 2011. Web. 18 May 2013. <http://coolcosmos.ipac.caltech.edu/cosmic_classroom/cosmic_reference/molecular_clouds.html>.
Lada, Charles J. "Molecular CloudsNear-Infrared Extinction and Molecular Cloud Structure." ifahawaii. n.p., n.d. Web. 18 May 2013. <http://www.ifa.hawaii.edu/users/jpw/ism/reading/lada_extinction_mapping.pdf>.
Mathis, John S. "Molecular Cloud." Brittanica, 2009. Brittanica. Web. 16 May 2013. <http://www.britannica.com/topic/151690/contributors>.
Nosowitz, Dan. "Unbelievable Hubble Shot Captures the Biggest "Star Nursery" Nearby." Gizmodo. Gawker Media, 15 Dec. 2009. Web. 16 May 2013. <http://gizmodo.com/5427429/unbelievable-hubble-shot-captures-the-biggest-star-nursery-nearby>.
Smith, Stephen. "Crumbling Pillars." Thunderbolts. N.p., 21 Nov. 2012. Web. 7 May 2013. <http://www.thunderbolts.info/wp/multimedia/2012/11/21/crumbling-pillars/>.
+A youtube video with the link- http://www.youtube.com/watch?v=AF6xG9-d61A