Helium Research Paper

The life cycle of the star is a long process that has taken place for billions of years and will continue to take place long after our star is no longer in existence. In this essay I will be explaining the magnificent process of how a star is first born till the end of its life cycle. First, I will be explaining how the star is first formed in all its beauty big or small. Then, I will be explaining the path of an average star like our own sun will take. After, I will be explaining the journey of a massive star in all its glory till its destructive end. All stars are first formed in clouds of gas called nebulae, turbulence deep within the nebulae causes cores to form as the mass begins to grow the nebulae begins to collapse upon itself due to

Existing models of stellar evolution indicate that the star was born in the Nebula (also called molecular clouds). It is generally believed that the nebula has the number density of molecules about 〖10〗^(-4)~〖10〗^6/〖cm〗^3 in the Milky Way, 70% of which is made of H_2, most of the rest is He. Lower temperature nebula eventually gave birth to low-mass stars. Higher temperatures nebula called giant molecular clouds, this nebula will produce a variety of stars which have all sorts of mass. If its gravitational energy is balanced by pressure, the molecular cloud would have been in a state of hydrostatic equilibrium.

Helium is the coolest thing in the world. It changes your voice. It makes your voice higher when your voice is really low. You put it in Balloons to make it stay up. You usually use it for party's. Well the first time that I did it it was really funny. But for my grandpas surprise birthday party we used helium for the balloons.

There are many different uses for helium. Most people associate helium with party balloons and the Goodyear blimp. A dangerous (don’t try this at home!) thing that is commonly known about helium is if inhaled it can cause vocal changes. By inhaling helium (usually out of party balloons) this results in a high pitched voice, most similar to that of Alvin from ‘Alvin and the Chipmunks’. There are however, some other very interesting ways that helium is used. Helium is used for welding, MRI scanners, deep water diving, and even fueling rocket engines used by NASA!

Have you ever looked up at the sky on a clear night and wondered, “what else is out there?”. What could possibly lie beyond the beautiful blanket of stars that we see with our naked eye? Nebulas are one of many galactic phenomena that lie beyond the Kuiper belt. Mysterious and fascinatingly beautiful sights to behold, they have more of a purpose than just painting the galaxy backdrop with color. I’m not a diehard fan of astronomy and to be perfectly honest I find it difficult to follow most of the information I have learned. However, when I came across pictures and information on nebulas I was instantly fascinated. From how and why they’re formed, to what they do for the galaxy, I’m excited to take you on an intellectual journey though nebulas.

seen day and night in the sky. It is now known as the crab nebula, and is a breeding ground for smaller stars. Another way for a supernova to be created, is when a white dwarf siphons off hydrogen from another star to the point where it will become unstable and explode.

Isaiah Guerena Period 5 Helium Containing only two protons Helium was first discovered by Pierre-Jules-Cesar Janssen. Pierre was a french astronomer that noticed the sun giving off something never seen before. Sir Norman Lockyer was an english astronomer that noticed the light given off the sun was at a wavelength of 587.5 nanometers. No other element known during this time period was able to produce that type of light so suggesting it was a new element the sun was burning was Helium. This was all discovered in 1868 as Pierre noticed a yellow line during a solar eclipse and Sir Norman Lockyer studied its description.

7. What is a planetary nebula, and how does it form? A planetary nebula is a luminous shell of gas that comes out of an old star with a low mass (G-9). When enough of the gas leaves a star for the core to become visible, the expanding dust and gases form a planetary nebula (408). 12. What is the mass range of neutron stars? The range of neutron stars is millisecond pulsars. Millisecond pulsars is the name of companions pulsars which connect the mass of a star but not necessarily a neutron star. The extra weight after the connection allows the star to gain a faster speed while falling (434 — 9th edition).

These protostars look like stars with a cloud of gas and a disk around them.

The dust and gas remaining in the nebula was slowly assimilated to form primitive planetary material. Initially, nebular dust accreted to form small, loosely-bound balls of dust. These dust-balls encountered violent, high-temperature collisions and were melted, resulting in the formation of molten silicate and metal droplets. The molten droplets then cooled quickly and formed small millimeter-sized spheres of rock called chondrules. Meteorites containing these objects are called chondrites (Wood 2005).

A nebula is a star nursery where millions of new stars are created, nebulae vary is shape, size and temperature.Within the dark parts of a nebula are where the stars are usually born, within these dense, dark areas hydrogen-gas ,clouds and dust begin to spin as gravity crushes this matter into a super dense spherical shape, the beginning of a star.

Also after questioning why nebula tend to glow with radiant colors, I determined that they emit radiation when its atoms drop to lower energy levels, and the color is caused by the large amounts of hydrogen. Furthermore, a moderator specified the nebula as a Herbig-Haro object, or a nebula grouping consisting mainly of newborn stars that form when jets of gas collide with other gas and dust that only live for a couple thousand years (Swinburne

The inner core has reached its final high density state and the nuclear burning surrounding it increases in intensity. The helium burning becomes unstable and the shell becomes sensitive to changes in temperature and high in pressure, causing explosive flashes. The star’s outermost layers begin to expand and contract as they heat and cool in response to the flashes. Once the star exhausts the remaining fuel at its core, ultraviolet radiation ionizes the surrounding cloud and the star. The result is a planetary nebula, which is a round or oval shape created by the escaping of expanding

Since we first gazed upon the heavens, man has been perplexed over where the bright lights in the sky have come from. This report will provide information for the birth and death of both low and high mass stars that is supported by scientifically proven statements and observations. It is the long held belief of many, that molecular clouds are the nurseries of stars. These dense clouds of gas are most often found in the spiral arms of galaxies. Obviously, smaller cloud produce low mass stars while large clouds produce high mass stars which collapse much faster than their smaller siblings during the protostar phase ( Washington). At this point, the cloud is cool with very low pressure. Once these clouds of gas become dense enough, they collapse to create the beginnings of a star know

After carbon sinks to the middle of the star it also fuses with itself and creates oxygen and now oxygen is at the center of the star. The same process repeats with oxygen and it forms iron. Iron is the last thing that is formed because it does not produce energy, therefore it will not fuse with itself, so it forms the core of the star. The elements in these layers have formed an onion. After iron is settled in the center, the star begins to cool and the star will start to compress. When the star compresses, the temperature begins to increase and eventually the star will explode resulting in a