what are stars made off?

Answer 1

Mostly hydrogen, some helium, and relatively small amounts of various other elements.

Answer 2

A star is a massive, light-emitting, roughly spherical body of plasma. Stars are grouped together to form galaxies and dominate the visible universe. Held compact by gravity, nuclear fusion is sustained in the star's core, generating and radiating energy into outer space. Without stars, life and most atomic elements would not exist.

Astronomers can determine the mass, age, chemical composition and many other properties of a star by observing its spectrum, luminosity and motion through space. The total mass of a star is the principal determinant in its evolution and eventual fate. Other characteristics of a star that are determined by its evolutionary history include the diameter, rotation, movement and temperature. A plot of the temperature of many stars against their luminosities, known as a Hertzsprung-Russell diagram (H-R diagram), allows the current age and evolutionary state of a particular star to be determined.

A star begins as a collapsing cloud of material that is composed primarily of hydrogen along with some helium and heavier trace elements. Once the stellar core is sufficiently dense, some of the hydrogen is steadily converted into helium through the process of nuclear fusion. The remainder of the star's interior carries energy away from the core through a combination of radiation and convective processes. These processes keep the star from collapsing upon itself and the energy generates a stellar wind at the surface and radiation into outer space.[1]

Once the hydrogen fuel at the core is exhausted, a star of at least 0.4 times the mass of the Sun[2] expands to become a red giant, fusing heavier elements at the core, or in shells around the core. It then evolves into a degenerate form, recycling a portion of the matter into the interstellar environment where it will form a new generation of stars with a higher proportion of heavy elements.[3]

Binary and multi-star systems consist of two or more stars that are gravitationally bound, and generally move around each other in stable orbits. When two such stars have a relatively close orbit, their gravitational interaction can have a significant impact on their evolution.[4]

You could get more information from the link below...

Answer 3

I think Stars are made up of lots and lots of very hot gases that are in the midst of nuclear fusion. Their cores may contain some heavy metals in a super molten state that we do not understand yet. The average diameter of a star is several thousand times the diameter of the Earth so they are very large. Explosions of extra hot gases and other minerals occur frequently and shoot far out into space from the surface. On our Sun, which is a Star, we call those explosions Sun Spots. Those noticeable occurrances interfere with radio propagation here on Earth because of their intense radiation of energy, some of which is near the radio wavelengths.

Answer 4

A star begins as a collapsing cloud of material that is composed primarily of hydrogen along with some helium and heavier trace elements. Once the stellar core is sufficiently dense, some of the hydrogen is steadily converted into helium through the process of nuclear fusion.

Answer 5

The closest star is billions of years away.

The composition of most stars can be as diverse as the composition of this solar system.

Only few places can support life, but the big question still remains how many planets in other solar systems can support life as we know it.

Answer 6

NASA SPACE.

http://www.hq.nasa.gov/office/pao/History/mission_patches.html

http://wdcrobcolp01.ed.gov/cfapps/free/displaysubject.cfm?sid=8&subid=76

http://powerweb.grc.nasa.gov/pvsee/publications/mars/MarsPaper/Future.html

http://www.nasa.gov/home/index.html

http://genesismission.jpl.nasa.gov/

http://science.ksc.nasa.gov/

COSMOLOGY

Cosmology : a web site directory of selected sites

http://www.galacticsurf.net/cosmolGB.htm

http://superstringtheory.com/cosmo/

http://map.gsfc.nasa.gov/m_uni.html

http://www.damtp.cam.ac.uk/user/gr/public/cos_home.html

http://www.sec.noaa.gov/primer/primer.html

Cosmology Theory Of The Universe

"The most beautiful thing we can experience is the mysterious. It's the source of all true art and science. He to whom this emotion is a stranger, who can no longer wonder and stand rapt in awe, is as good as dead." ~ Albert Einstein (1930)

http://dhost.info/cosmology/

Welcome! STARS presents a comprehensive suite of pages that tell the stories of stars and their constellations.

http://www.astro.uiuc.edu/~kaler/sow/sowlist.html

http://curious.astro.cornell.edu/links.php

http://malyszp.tripod.com/

http://www.stargazing.net/david/constel/skymaps/janlines.html

http://www.seds.org/messier/map/UMa.html

PLANETARY NEBULAE

http://www.blackskies.org/class1.htm

http://www.users.zetnet.co.uk/pete/Star%20Classification.htm

http://www.boonhill.net/faac/other/basic/basic10.html

WEBSITES ON THE SOLAR SYSTEM AND SPACE

http://www.cumbavac.org/Solar_System_and_Space.htm

Good luck.

Kevin, Liverpool, England.

Answer 7

They are the same as our Sun. Mostly hydrogen with traces of various other elements.


Doug

Answer 8

hydrogen gas, that heats up to a really really hot tempreature and from that point starts fusion or fission not sure though which one it is

Answer 9

found something
"Stars are formed within molecular clouds"

Answer 10

flammable gas, some people make their own stars