We've known for some time that planets like Earth are born from disks of gas, ice, and dust surrounding stars as they themselves form. But details matter: Planets like Earth form differently than ones like Jupiter, and where in the disk they're born makes a difference in their potential size, [...]
Thu, Jun 25, 2020
Source: Bad Astronomy
Stars are immense objects. We toss around words like "big" and "huge" all the time, but what does this mean on a human scale? After all, the Sun is a mind-crushing 1.4 million kilometers in diameter, wide enough that you could line 110 Earths side-by-side across it. And there are stars much, [...]
Tue, Jun 23, 2020
Source: Bad Astronomy
Did Pluto form hot or cold? That may seem like a weird question. After all, at 6 billion kilometers from the Sun, things are chilly. However, creating a world involves a great deal of heat. The question is, where does it come from? And how did that affect the Pluto that we [...]
Mon, Jun 22, 2020
Source: Bad Astronomy

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