What Are Seasons Like On Solar System Planets? Comparison
Leírás
When you think about the planets, it's more than just their composition, it's about the days and years that they have, as well as their seasons. Join me as we break down the planets and their times and seasons.
9. Mercury
Yes, we're going in reverse order, isn't that fun?
Mercury is a very interesting planet in a whole host of ways, not the least of which is because of the fact that it is indeed the closest planet to the sun. Because of this, it has certain...perks, as well as disadvantages. First and foremost, it's the closest planet to the sun, which means that it is indeed the hottest planet because it's only 35 million miles from the sun. Now yes, I'm sure that this SEEMS like a long distance, but when you're talking about the sun? A sun that is 860,000 miles in diameter? That's not as far as you think.
Because of this, it only takes about 89 days for Mercury to have a years rotation around the sun, and as for how long a day is...well...that's where the twist comes in. Because you see, a "day" is the amount of time it takes for a planet to rotate around its axis, right? Well, for Mercury, it has a VERY slow rotation.
To the extent that it actually takes over 58 Earth days just rotate around its axis...ONCE. Can I just say it? that's a REALLY long time!
In fact, if you do the math, that would mean that the "day count" for about a year on Mercury is just over 1 1/2 days. That's some really weird planet calendar, am I right?
Oh, and because of the heat that is blasted onto the planet, there are no seasons. Mainly because it's a constant torrent of heat that is truly never ending, adding alongside the slow rotation of the planet of course.
And you wonder why we're not eager to go colonize Mercury...
8. Venus
Venus is known as our "sister planet", because in many ways it's like Earth. It's only a little bit smaller, has an atmosphere that is full of gasses, and we do know that it has a definitive surface like certain other planets in our solar system. Although it should be noted that despite the similarities to Earth, Venus is one of two planets (the other is Mercury) that doesn't have a moon. Many are curious about that, but I digress.
If you want to get really trippy, you need to talk about how Venus handles its days and years. Because not unlike Mercury, Venus has a VERY slow rotation, but to the extent that it's actually longer than a year! Yeah, that's right, a day is longer than a year on Venus. Its orbital period, or how long it takes to make a full rotation around the sun, is about 225 Earth days, whereas a singular day on Venus is 243 days. That's weird.
When it comes to the seasons on Venus, it's not much better, in fact, it's kind of worse. As you likely know, the temperature on Venus is extremely hot. The average temperature is about 460 degrees Celsius due to the Greenhouse Effect that essentially turned the planet into an oven. That's a big reason why we don't dare try and colonize Venus, because anything we'd make would have to be able to withstand that heat, and that's not easy.
Plus, the tilt of the axis on the planet is so minimal that the temperature honestly doesn't change on the surface of the planet. When you add that up, it means that Venus is a place that nobody wants to live on...unless you're talking about in the atmosphere where it's technically possible for us to live...but that's another list.
Shall we move on to the planet we adore?
7. Earth
Ok, sure, you likely know all about how the Earth works, but can we just take a moment and acknowledge how nearly perfect the Earth is in terms of its rotations, its year orbit, and the seasons that we have? Because sometimes it's hard to appreciate something that you expect to be working just because it has for a few billion years.
Given its distance from the sun, the Earth orbits it once every 365 days, and 366 days on a leap year, which is once every 4 years. Which we can expect this upcoming February 2020, where we get the legendary February 29th. As for a day, the Earth rotates once every 24 hours. Which gives us plenty of time to live our lives, get some work done, be with people we care about, get about 8 hours of sleep...and still complain that there isn't enough time in the day. I'm just saying.
And of course, for our seasons, we have spring, which is nice and pretty and cool. Summer, which can be hot, but is also when school isn't around. Fall, a season signaling what's to come, and a warning for animals to get ready for winter. And Winter...which is cold, and has snow, and ice...but it also has Christmas, so that helps balance it out I guess.
Have you ever wondered why our seasons are so much better than the other planets in the solar system? That's because of our axial tilt. You see, the planets are on an axis, and that axis tilts over the course of the orbital year. For Earth, that tilt is 23.4 degrees, which means that while one hemisphere gets a lot of heat and sun (which is Spring and Summer),
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