Posts made in March, 2016


The Sun’s planetary system, like the many other systems discovered in the last 2 decades, formed out of a protoplanetary disk. These disks are a natural by-product of star formation (almost every young star has one) and consist of a lot of gas (mostly hydrogen) and a small amount of solid dust particles. On timescales of hundreds of thousands of years, these dust grains collide and stick together, forming larger and larger bodies that...

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