Why Uranus is the Weirdest Planet in Our Solar System | The Ice Giant That Rolls Like a Ball#uranus #planet uranus #solar system #seventh planet #ice giant #william herschel #coldest planet #voyager 2 #planet discovery #uranus rings #uranus moons #blue gr─影片 Dailymotion

Cosmic Canvas

“Ever heard of a planet that rolls on its side, glows blue-green, and is colder than anywhere else in the solar system? 🌌 That’s Uranus — the oddball giant in our cosmic backyard. Stick around and I’ll even show you how to spot it from here in Australia!”#uranus #planet uranus #solar system #seventh planet #ice giant #william herschel #coldest planet #voyager 2 #planet discovery #uranus rings #uranus moons #blue green planet #methane atmosphere #axial tilt #planet rotation #uranus facts #space exploration #astronomy #titania moon #oberon moon #magnetic field #diamond rain #planetary science #planet atmosphere #uranus temperature #wind speed #pleiades #taurus constellation #uranus planet #uranus system

Transcript

00:00What if I told you the farthest planet in our solar system has winds faster than a fighter jet,

00:05storms that appear and vanish in years, and a moon colder than liquid nitrogen?

00:09Meet Neptune.

00:10I reckon most of you probably won't recognize this at first glance,

00:13but this is likely the first time you're really having a proper look at it.

00:16I'm going to give you the full rundown on this blue beauty.

00:19If the Uranus content felt like basic stuff to you astronomy veterans,

00:23Starweaver hopes you'll help answer questions in the comments for everyone else.

00:27Whether you're new to this or not, buckle up.

00:30Today I'm taking you on a journey to Neptune.

00:32Neptune is the farthest planet in our solar system,

00:35sitting a whopping 4.5 billion kilometers from the sun.

00:39And yep, it's completely blue and absolutely stunning.

00:43While light takes just 8 minutes to reach Earth, it takes over 4 hours to get to Neptune.

00:48You might think it's too far away to matter to us,

00:50but honestly, its story is way more exciting than you'd imagine.

00:54How big is Neptune?

00:55If Earth were a 1cm glass marble,

00:57Neptune would be about the size of a ping-pong ball.

01:01Pretty massive, right?

01:02It's 17 times heavier than Earth and 58 times larger by volume,

01:06but much less dense at just 1.64 grams per cubic centimeter.

01:10Don't let the size fool you though.

01:12Neptune's mainly made up of hydrogen, helium and methane,

01:16making it a gas giant like Jupiter and Saturn.

01:19But scientists prefer calling it an ice giant along with Uranus

01:22because they've got heaps more water, ammonia and methane ice mantles.

01:26We covered the specifics in the Uranus episode,

01:29so I won't bang on about all that again.

01:32Neptune's blue color is absolutely stunning.

01:34You might think it's blue because of water like Earth,

01:37but actually it's due to methane in its atmosphere.

01:39Methane soaks up red and orange light while reflecting blue and green light,

01:43giving Neptune that deep, brilliant blue we see through telescopes.

01:46Its name comes from the Roman god of the sea, Adax Knot.

01:51Pretty fitting for its appearance, don't you think?

01:53Neptune's discovery is a fascinating story.

01:56Back in 1846,

01:59scientists noticed something dodgy about Uranus's orbit.

02:02After some serious mathematical number crunching,

02:05French mathematician Le Verrier and British mathematician Adams

02:08boldly predicted Neptune's existence.

02:11German astronomer Gahl then used their calculations

02:13to actually find the planet with a telescope.

02:15That makes Neptune the first planet in human history discovered through maths,

02:19rather than just spotting it in the sky.

02:21Shows you how important it is to study maths, right?

02:24Neptune spins incredibly fast, one rotation takes just 16 hours.

02:28While Earth completes one rotation, Neptune does one and a half.

02:31Fair dinkum fast.

02:33Its axial tilt is 28.3 degrees, similar to Earth's,

02:37so it technically has seasons.

02:39Because of its low eccentricity,

02:41seasonal changes aren't as dramatic as Earth's,

02:43but they exist in theory.

02:45The catch?

02:46Each season lasts over 40 years

02:48because Neptune takes 165 years to orbit the Sun once.

02:52Imagine that.

02:54One Neptune year and several generations have passed on Earth.

02:57It's like time moves at completely different speeds.

03:00Temperatures are bloody cold,

03:02with the upper atmosphere averaging around 214 doubles.

03:05That's colder than anything you'll find in your freezer.

03:08Yet, in this freezing environment,

03:11Neptune hosts the most violent storms in the solar system.

03:14Wind speeds can reach 2, 100 kilometers per hour,

03:17more than five times stronger than Earth's hurricanes.

03:21Here's the kicker.

03:22Even if you were running at bullet train speeds with the wind behind you,

03:25these gusts would still send you flying like a rag doll.

03:28Scientists have always wondered,

03:29how can Neptune, so far from the Sun with bugger-all energy input,

03:34generate the most ferocious storms?

03:36The answer might lie within.

03:38Neptune actually releases more heat than it receives from the Sun.

03:42Internal heat convection makes the atmosphere churn like boiling water,

03:46with storms constantly erupting.

03:48For Neptune exploration,

03:50humanity has only sent one probe,

03:52Voyager 2.

03:53Back in 1989,

03:56Voyager 2 flew past Neptune,

03:58our only spacecraft to ever visit this distant world.

04:02It sent back incredible photos and data

04:04that revealed Neptune's great dark spot,

04:06similar to Jupiter's great red spot,

04:08a massive cyclonic storm.

04:10What's really interesting is that this dark spot

04:12disappeared within a few years,

04:14showing how dramatically Neptune's atmosphere changes.

04:16Storms can form and vanish in surprisingly short timeframes.

04:20Talk about unpredictable weather.

04:22Besides the dark spot,

04:23Neptune has extremely faint rings.

04:26They're not as spectacular as Saturn's,

04:27but equally mysterious.

04:29The rings are mainly dust and tiny ice particles,

04:32with some showing uneven brightness distribution called ring arcs.

04:36How these arcs form remains a mystery,

04:38possibly related to gravitational effects from Neptune's moons.

04:42Scientists are still scratching their heads over this one.

04:44Speaking of Neptune's moons,

04:46that's another highlight.

04:48It has 14 known moons,

04:49with the largest being Triton.

04:51This one's absolutely fascinating.

04:53It's the only large moon in the solar system with retrograde orbit,

04:57meaning it orbits opposite to Neptune's rotation direction.

05:00Scientists reckon Triton was originally a Kuiper Belt object

05:03captured by Neptune's gravity.

05:05Triton's diameter is 2,

05:07706 kilometers.

05:09A5's larger than Pluto.

05:11Surface temperatures drop to 235 to Great Sea,

05:15nearly absolute zero,

05:17yet it has active geology including nitrogen geysers.

05:20Yes, you heard right,

05:22ice volcanoes.

05:24They don't spew lava,

05:25but liquid nitrogen and dust,

05:27reaching heights of 8 kilometers.

05:29That's the same liquid nitrogen they use to freeze the T-1000 in Terminator 2.

05:33Pretty cool, eh?

05:34Beyond Triton,

05:35Neptune has heaps of smaller moons like Nereid and Proteus,

05:39each with different orbits.

05:40Some orbit close to Neptune,

05:42while others circle from great distances.

05:44These moons have complex gravitational relationships

05:47with Neptune's ring system

05:48that scientists are still trying to figure out.

05:50Neptune's magnetic field is a beast,

05:52incredibly powerful,

05:54with the magnetic axis tilted 47 degrees from its rotation axis.

05:58Compare that to Earth's 11 degree difference.

06:01That's way more extreme than Earth's.

06:03This extreme magnetic structure creates unique aurora phenomena.

06:07Scientists have observed through telescopes

06:09that Neptune's auroras form brilliant light bands in its atmosphere.

06:13While not as easily visible as Earth's auroras,

06:16they're equally impressive under scientific instruments.

06:19Neptune's discovery expanded our understanding of the solar system.

06:23Beyond its orbit lies the mysterious Kuiper belt,

06:25home to countless icy objects including Pluto,

06:28Haumea and Eris.

06:30You could say Neptune is the guardian of the eight planets,

06:33helping us understand our solar system's structure.

06:36Neptune isn't just a guardian,

06:37it actively influences the entire solar system.

06:41Heaps of Kuiper belt objects change orbits

06:43due to Neptune's gravitational pull.

06:46Some get flung into the inner solar system,

06:48so that meteor you see might be visiting Earth

06:50thanks to Neptune's gravity.

06:52Neptune acts like a massive, cosmic coordinator,

06:55quietly maintaining solar system order.

06:58From Mercury to Neptune,

06:59we've witnessed humanity's journey exploring the universe.

07:02This blue beauty has only been visited once by Voyager 2

07:05in 1989,

07:08leaving us with stunning imagery and incredible data.

07:11Future missions are already being planned

07:13to unlock more secrets of these ice giants.

07:16With advancing technology,

07:17we might soon visit Neptune and its moons,

07:20perhaps even turning the Neptune system

07:21into another stepping stone for deeper space exploration.

07:24The mysteries of the outer solar system await us.

07:28Neptune, with its violent storms,

07:30mysterious rings and fascinating moons,

07:32reminds us that even in the coldest,

07:34most distant corners of our cosmic neighbourhood,

07:36there's still so much to discover and understand.

07:39This is Cosmic Canvas.

07:41I'm Starweaver.

07:41If you love space exploration and cosmic mysteries,

07:44hit that like button and subscribe.

07:47We've completed our journey through all eight planets.

07:49What an incredible ride.

07:51Next, we'll explore the dwarf planets,

07:53asteroids and other fascinating objects in our solar system.

07:57Don't miss it.

07:58See you next time.

07:59Love you all.

Why Uranus is the Weirdest Planet in Our Solar System | The Ice Giant That Rolls Like a Ball#uranus #planet uranus #solar system #seventh planet #ice giant #william herschel #coldest planet #voyager 2 #planet discovery #uranus rings #uranus moons #blue gr

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