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Microcosm by Hadria Beth for March 29, 2019

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    Rodney K. Anderson  about 1 year ago

    ‘Us inner rockies—’ I love that description.

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    scyphi26  about 1 year ago

    The more we learn about other star systems, the more I realize just how lucky we were to get the star system we did, with all the conditions just right to support us. Really probably shouldn’t take it for granted.

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    gammaguy  about 1 year ago

    “From my observations, most exoplanets like you orbit their star much closer.”

    Maybe you need to improve your ability to observe? With current techniques, the farther a body/planet is from its star, the more difficult it is to observe.

    “I theorize you were once much closer to our Sun, but some other gravitational force pulled you back. Most likely Saturn.”

    That makes no sense at all.

    1) Since Jupiter has more than 4 times the mass of Saturn, any pull of one toward the other would move Saturn toward Jupiter to a much greater degree than the other way around.

    2) Due to 1), for Saturn to have pulled Jupiter from near the Sun to its present orbit would require that Saturn had started from beyond Pluto’s orbit, but at that distance the mutual gravitational attraction would be too small to have any consequential effect.

    3) Besides, Saturn is also a “gas giant” planet, just as Jupiter is. So according to the process suggested, another object would have been needed to “pull” Saturn out beyond Jupiter’s orbit, even to Saturn’s present orbit. They aren’t there. It’s not “gas giants all the way down”.

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    hadriabeth creator about 1 year ago

    For anyone interested, this comic was based on this article: https://interestingengineering.com/why-didnt-jupiter-become-a-hot-jupiter

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