The solar nebula became hottest at the center, where much of the mass collected to form the protosun. The protosun eventually became hot enough that fusion ignited at its core - at which point the protosun became a full-fledged star.
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cococubed.asu.edu/class/planet/planet_class07.pdf
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I was watching a show about the Sun the other day. Seeing all the solar flares mass ejections that the Sun does all the time it got me to wondering. ... Yes, but I think you'll find that this lower luminosity begins with the point in time when the protosun became a full-fledged star (ie hydrogen fusion point or ZAMS).
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www.bautforum.com/space-astronomy-questions-answers/976...
www.bautforum.com/space-astronomy-questions-answers/97614-how-big-sun-when-first-ignited.html
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ultimately the center of this cloud becames a dense, hot prostar. Once the prostar became hot enough, it began to fuse hydrogen into helium, becoming a full-fledged star. ... Eventually the cloud became quite hot and became a protostar. After about 50 million years the protosun became so hot it ignited, triggering a chain...
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astronomy2.20fr.com/custom2.html
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"How Do Meteors/Asteroids Form?" - Find the answer to this question and millions more on Yahoo! UK & Ireland Answers. ... they became big enough to attract large amounts of gas around them. Soon after these gas giants formed, the protosun became a full fledged star.
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uk.answers.yahoo.com/question/index?qid=20081219194655A...
uk.answers.yahoo.com/question/index?qid=20081219194655AA2S7oU
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2. Over the years the nebula started to spin and heat up as a result of gravitational pull. The nebula formed the protosun and a protoplanetary disk. ... Soon after the formation of the gas giants the protosun became a full-fledged star.
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www.personal.psu.edu/txc206/infsy547/project/547_projec...
www.personal.psu.edu/txc206/infsy547/project/547_project/info/hist/hist.html
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After 100 million years, the pressure and density of hydrogen in the center of the collapsing nebula became great enough for the protosun to begin thermonuclear fusion. ... At this point the Sun became a full-fledged star.[16]; From the remaining cloud of gas and dust (the "solar nebula"), the various planets formed.
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www.tripatlas.com/Solar_system
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After 100 million years, the pressure and density of hydrogen in the centre of the collapsing nebula became great enough for the protosun to begin thermonuclear fusion. This increased until hydrostatic equilibrium was achieved, with the thermal energy countering ... At this point the Sun became a full-fledged star.[16]
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www.includipedia.com/wiki/Solar_System
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Since different elements are related to patterns of specific colors, scientists can determine the composition of an object by studying the light it reflects or emits.) Some asteroids may have enough ice content that they mark transitional objects between ordinary asteroids and full-fledged iceball comets.
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www.scribd.com/doc/13396474/-The-Grand-Tour-3rd-Edition...
www.scribd.com/doc/13396474/-The-Grand-Tour-3rd-Edition-A-Travelers-Guide-to-the-Solar-System
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At this point the Sun became a full-fledged star.[20] From the remaining cloud of gas and dust (the "solar nebula"), the various Hubble image of protoplanetary disks planets formed.
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www.scribd.com/doc/19836113/Solar-System-Final
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