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Since it’s summer and hot and bright and it’s staying light outside for a wee longer than the rest of the year, it may be a good time to tell you a little something about the sun. Most of us take that great ball of fire for granted we see it nearly every day of our lives. We may miss it when it rains and badmouth it when we’re in the middle of a heatwave, but most of the time it’s "just there." OOOH, PRETTY YELLOW! The sun is that yellow color because yellow’s the only color of star that can support life. Blue stars, which are incredibly massive, are way too energetic and live out their lives too quickly and violently for us to live comfortably (if at all) under their splendor. Red stars, on the opposite end of the spectrum, are way too cool and lack substantial energy to do a planet any good. Yellow stars, like our sun, pour out just the right amount of energy and live just long enough for a planet full of life such as ours to exist. Our sun is the only color it can be for us to survive. SO FAR AWAY We are located 93 million miles away from the sun on average. Pretty far, eh? But did you know that if Earth were just a million miles closer on average than it is now, we would be a dead planet? Long ago Earth would have fallen victim to a runaway greenhouse effect like the one that now devastates poor Venus, our nearest neighbor closer to the sun. Temperatures on Venus are incredibly hot (lead can melt there!) and totally unsuited for life. On the other hand, if we averaged just about a million miles farther away from the sun than now, we would be a frozen planet like Mars. Check inside your freezer for complex life. See any? Try living in a meat locker for awhile and imagine how humanity might fare in a place like that. That happy sun in the sky is exactly where it has to be for us to survive here and live comfortably. BACHELOR No. 1 Yes, our Sun is a lonely bachelor star. It has no companion stars as most stars out in deep space do. (It may be alone, but is it really lonely? Of course not, it’s only a ball of gas! Sheesh!) Why is its bachelor status good for us? Well, if it had a companion (or two or three), our planet probably wouldn’t be here, and we wouldn’t be here, for sure. A little planet pulled and tugged by the competing gravity of other stars isn’t likely to hold together well. Even if it did maintain its integrity (science lingo for hold together), our orbit would mean the elimination of life. That’s because the other stars would cause our orbit to be so eccentric (science lingo for wacky) that some of the time we would be fatally close to the sun (ouch, hot!!), other times we’d be fatally far (brrrr, frozen!). We would not have the nearly circular orbit we have now and which we need. We would also not be here to talk about it. This next question seems ludicrous, but what if, on the other hand, we had no star rather than one? Of course there would not be enough radiation to support any life, let alone human. One sun is necessary that’s exactly what we got. | ||||
Sword & Spirit Ministries | |||||