00:00Uranus has a 22-year-long winter. On a planet like that, if it was habitable, everything
00:06would be frozen and covered in ice, white and gray desert all around. People would have
00:11to stock up on food and supplies, make extra sturdy buildings and homes, and always wear
00:16thick warm clothes. Finally, transportation would be next to impossible. But thanks to
00:22the Sun, each planet in our Solar System has unique weather, climate, and seasons. There
00:27are several reasons contributing to that. First of all, it's all about how far a planet
00:34is from the Sun. If a planet is close, like our neighbor Mercury, it gets a severe sunbath.
00:40But if it's far away, like the dwarf planet Pluto, it gets frigid even during summer.
00:45Now, think about how fast a planet spins. Planets that take their sweet time to rotate,
00:51like Mercury, have super long days and nights. That means one side gets toasty hot when the
00:57Sun's out and freezing cold when it's dark. Earth is pretty balanced with its moderate
01:02spin speed. The atmosphere matters too. A thick atmosphere keeps temperatures from going
01:08wild. But if there's almost no atmosphere, things heat up and cool down immensely. The
01:14tilt of a planet's axis and the orbit shape are crucial as well. Even on Earth, places
01:20near the poles get 6 months of daylight and 6 months of night. And if a planet's path
01:25around the Sun is like an oval, it heats up and cools down more than it moves.
01:31No two planets are unique. While some have these changes, others don't. Let's start
01:36with Mars, our favorite little planet and potentially our future home. It's the fourth
01:41wheel in our solar system and has a quirky way of doing seasons. Like Earth, it has four
01:47of them, although they're roughly twice as long as those on Earth. But this planet has
01:52an eccentric egg-shaped orbit. Because of this, its orbital speed varies more. This
01:57influences these seasons. Martian winters last about 4 Earth months. They're also much
02:03colder than on Earth. Near the poles in winter, temperatures can get down to minus 190 degrees
02:09Fahrenheit. One hemisphere grows an ice cap as winter rolls in, snatching about a quarter
02:15of the atmosphere as dry ice. Then, in spring, it gives it back. Mars also doesn't have the
02:21luxury of massive oceans like Earth to balance out its extreme temperatures. Scientists believe
02:26it might have had some of that in its early days, but now all the water is gone. With
02:32no water, Mars can hit very low temperatures in winter and hotter summer days.
02:40The grand gas giant Saturn has a slightly more tilted axis than Earth. However, despite
02:46its elliptical path and tilt, it stays consistently chilly. That's because it's way out there,
02:52far from the Sun's warmth. Even though it's summer, Saturn remains distant and doesn't
02:57get too cozy. It also has a thick atmosphere. The atmosphere on a planet acts like a temperature
03:03regulator. If some part gets too hot or cold, the atmosphere gently distributes this temperature
03:09across the planet. So, while one side might catch more sunlight during its equinox, the
03:15thick air ensures things stay relatively cool. Up high in Saturn's atmosphere, though, it's
03:21a different story. Temperatures can swing from seriously chilly in summer to an almost
03:26absurd minus 312 degrees Fahrenheit in winter. Uranus is the next planet, the ice giant.
03:35With an elliptical orbit and a serious distance from the Sun, it's stuck in a perpetual deep
03:40Its thick atmosphere also keeps temperatures frosty throughout the year.
03:45Uranus has a wild tilt, three times bigger than Earth's. It's almost lying on its side,
03:50and is probably one of the most intense places in our Solar System. During Uranus' summer,
03:56one pole gets full Sun while the other end faces the deep chill of darkness. In fact,
04:02because of its weird tilt and rotation, Uranus is even colder than its more distant neighbor Neptune.
04:08As we mentioned, each season on Uranus lasts around 22 Earth years. That's as close as we
04:14get to George Martin's fantasy books. That's because Uranus takes a leisurely 84 years
04:19to complete one path around the Sun, so its journey through the year is very slow.
04:27The final planet in our Solar System is Neptune. It's the most far-away icy giant.
04:32It has a tilt almost the same as Earth's and a nearly circular orbit, so it feels like it's
04:37supposed to be a bit more balanced. However, this planet maintains a bone-chilling atmosphere with
04:43unimaginably low temperatures. That's because Neptune receives only a tiny 0.1% of the sunlight
04:50Earth enjoys. On Earth, there's a gradual temperature shift from near to far. On Neptune,
04:57because of its circular orbit, there's only one atmosphere taking a spotlight.
05:01Unlike its neighbor Uranus, Neptune gets a bit of warmth from its core.
05:05But this warmth doesn't help much. The cold is pretty consistent, whether it's winter or summer.
05:13But some planets don't bother with traditional seasons. They just imitate them by having
05:18different temperature cycles throughout the year. These planets include Mercury, Venus, Mars,
05:23and Jupiter. Mercury is the closest planet to the Sun. Mercury is very weird because one full
05:30day-night cycle on that planet equals 176 Earth days. After half a year on Earth, it's finally
05:37time for Mercury people to go back home from work. That's because it moves in an egg path.
05:43This is also the reason why it has some wild temperature changes. Sometimes it's very close
05:48to the Sun, sometimes it's not. At the same time, it has no atmosphere and no protection from the
05:54Sun. This results in extremely hot days and extremely cold nights. But that means it has
06:00plenty of time to go from scorching hot to freezing cold. When it's farthest, that's Mercury's true
06:06winter, or at least how we call it. So if it had seasons, there would only be two.
06:11The next planet is Venus. It's a planet of relentless heat. Forget about seasons,
06:16it's just plain hot there all the time. It's super close to the Sun, and its almost circular
06:21orbit and tiny tilt of 3 degrees mean temperatures stay pretty steady throughout the year. Even in
06:28the supposed winter or the middle of the night, the temperature doesn't dip below 820 degrees
06:33Fahrenheit. It also decided to have a weird spin. Venus spins in the same direction as the Sun,
06:39Venus spins in the same direction as it moves around the Sun. That means the Sun is always
06:44right overhead, pouring its entire fiery love on the planet's surface. Venus doesn't really do the
06:51seasons like Earth. The closest they have to seasons is 225 days with at least 4 hours of
06:57sunlight. This you could call Venus' version of spring and fall. Jupiter, the big guy in our
07:05solar system, doesn't bother with the whole seasons drama. It keeps things simple with a
07:10tiny tilt of 3 degrees, almost as laid back as Mercury. Plus, its orbit is a close match to a
07:16perfect circle, so it doesn't have much variation in sunlight. Also, with a speedy rotation of less
07:22than 10 Earth hours, there's no time for the appearance of seasons from long nights. Winter
07:27on Jupiter is basically a repeat of any other time of the year. And finally, Pluto, which is still
07:34not a planet, but still worth looking at. Pluto resides on the outskirts of our solar system.
07:40This little outcast is the definition of cold. The temperatures are around minus 380 degrees
07:46Fahrenheit. It has the weirdest orbit, too. Its orbit is very long, elliptical, and tilted.
07:52Pluto travels a huge distance from the Sun. That, together with an almost non-existent atmosphere,
07:58keeps Pluto in a perpetual cold state. Winters there can get a bit more extreme than average.
08:04However, the biggest shift someone stranded on Pluto would notice isn't the temperature,
08:09but the Sun's brightness. Always thousands of times fainter than our Earthly view.
08:17That's it for today! So, hey, if you pacified your curiosity, then give the video a like and
08:21share it with your friends. Or, if you want more, just click on these videos and stay on the Bright
08:26Side!
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