https://padlet.com/449027/vsuas7v0728b By Zachary Greenspan - Mr. Lee Period 4 en-us 2019-01-09 16:35:32 UTC 2026-02-20 19:09:06 UTC hello@padlet.com 449027 https://padlet.com/449027/vsuas7v0728b/wish/319329309 The star begins to release energy, stopping it from contracting even more and causes it to shine. It is now a Main Sequence Star. This dwarf star named Alpha Centauri A.]]> 2019-01-10 16:31:55 UTC https://padlet.com/449027/vsuas7v0728b/wish/319329309 449027 https://padlet.com/449027/vsuas7v0728b/wish/319742558 Stars are born in a region of high density Nebula, and condenses into a huge globule of gas and dust and contracts under its own gravity.]]> 2019-01-11 16:23:31 UTC https://padlet.com/449027/vsuas7v0728b/wish/319742558 449027 https://padlet.com/449027/vsuas7v0728b/wish/319744123 A region of condensing matter will begin to heat up and start to glow forming Protostars. If a protostar contains enough matter the central temperature reaches 15 million degrees centigrade. At this temperature, nuclear reactions in which hydrogen fuses to form helium can start.]]> 2019-01-11 16:26:28 UTC https://padlet.com/449027/vsuas7v0728b/wish/319744123 449027 https://padlet.com/449027/vsuas7v0728b/wish/319749342 Alpha Centauri A will survive for around 10 billion years, until all of the hydrogen has fused to form helium. The helium core now starts to contract further and reactions begin to occur in a shell around the core. The balance between gravity pressured outward and inward which is caused by a nuclear reaction.]]> 2019-01-11 16:34:36 UTC https://padlet.com/449027/vsuas7v0728b/wish/319749342 449027 https://padlet.com/449027/vsuas7v0728b/wish/321077895 (I'm using the sun for these examples) The sun is a yellow dwarf. A star is a huge glowing ball of hot gas, mainly hydrogen and helium. The layers of a star is that it starts off in the center with the core, then the, radiative zone, convection zone, photosphere, chromosphere, and corona. The sun looks in bad shape compared to before, so it's got around 1 billion more years before it becomes a supernova.]]> 2019-01-16 03:50:42 UTC https://padlet.com/449027/vsuas7v0728b/wish/321077895 449027 https://padlet.com/449027/vsuas7v0728b/wish/321080444 After expanding and contracting, the outer layers and core will be disconnected creating a planetary nebula. This is a shell of glowing gas around shrunken dying star. This nebula has a span of about 2.5 light years.]]> 2019-01-16 04:10:40 UTC https://padlet.com/449027/vsuas7v0728b/wish/321080444 449027 https://padlet.com/449027/vsuas7v0728b/wish/321080819 A star is like a human life where when you are a fetus you are protostar. As the sun goes through it's life of getting bigger and evolving the same way that humans work. Eventually the stars run out of energy and either explode into a black whole, neutron star, or the core collapses. Just as a human is when they get to a certain age and die.]]> 2019-01-16 04:14:23 UTC https://padlet.com/449027/vsuas7v0728b/wish/321080819 449027 https://padlet.com/449027/vsuas7v0728b/wish/321082170 The remaining star is called a white dwarf. This stars temperature ranges from 20,000 to 10,000 kelvin. Diameter is about 10,000 km. The star will radiate the heat and light for millions of years.]]> 2019-01-16 04:31:56 UTC https://padlet.com/449027/vsuas7v0728b/wish/321082170 449027 https://padlet.com/449027/vsuas7v0728b/wish/321517493 The star begins to cool and slowly reach it's death soon after this transition. During this stage the star stops cooling.]]> 2019-01-17 01:56:37 UTC https://padlet.com/449027/vsuas7v0728b/wish/321517493