Dense purple-colored clouds in space, with a central blue nebula, and surrounded by hundreds of stars that are seen in a variety of colors, including blue, yellow, white, and red.
Astronomy

Our Solar System: What’s a Protoplanetary Disk?

November 22, 2020

We know how the solar system was formed. We also know that the planets grew out of a protoplanetary disk. Protoplanetary disks typically have masses that are only a few percentage of their star’s mass. They are also very thin, with a thickness of only about 10% of their radii. The disks contain gasses, like hydrogen and helium, and also micron-sized dust particles. […]

The Sun is seen in the center of the image, but far away, to the left of the Sun is the Jupiter, to the right of the Sun is the Earth and Mars, and the tiny stars fill up the space.
Astronomy

7 Clues to Understand How Our Solar System Formed

November 22, 2020

The concept of large bodies forming in space that lead a very ordered co-existence, some of which are made of rocks and metal, some of gas, and some of ices, can be daunting. But, nothing is ever by random chance. […]

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