what is the center of it?
As the contracting nebula rotated faster, it began to flatten into a protoplanetary disc with a diameter of roughly 200 AU and a hot, dense protostar at the centre
Solar System
The centre, where most of the mass collected, became increasingly hotter than the surrounding disc. As the contracting nebula rotated faster, it began to flatten into a protoplanetary disc with a diameter of roughly 200 AU and a hot, dense protostar at the centre.
the valles marineris system on mars is 4 000 km long the width of UNANSWERABLE does it have any ice caps? Yes, two permanent polar ice caps what is its weather like? The seasons of Mars are the most Earth-like where is it located in our solar system? Fourth planet from the Sun does it have any natural satellites? UNANSWERABLE what is the earlier mentioned system? It is the gravitationally bound system of the Sun and the objects that orbit it, either directly or indirectly when was it discovered? In the 17th century, Galileo discovered that the Sun was marked with sunspots, and that Jupiter had four satellites in orbit around it and around 1704 the term "Solar System" first appeared in English
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Solar System [SEP] Formation and evolution
Because of its vastly increased surface area, the surface of the Sun will be considerably cooler (2,600 K at its coolest) than it is on the main sequence. The expanding Sun is expected to vaporize Mercury and render Earth uninhabitable. Eventually, the core will be hot enough for helium fusion; the Sun will burn helium for a fraction of the time it burned hydrogen in the core. The Sun is not massive enough to commence the fusion of heavier elements, and nuclear reactions in the core will dwindle. Its outer layers will move away into space, leaving a white dwarf, an extraordinarily dense object, half the original mass of the Sun but only the size of Earth.