🌎 Get Our Merch designed with ❤ https://www.youtube.com/channel/UCNYaxPiba3oxmeL_3jKxnYA/store
💫Get 10% off Under Lucky Stars and enjoy our star maps completely custom-made 💫 https://www.underluckystars.com/INSANECURIOSITY
--
Have you ever wondered what the centre of the Earth looks like? What would the centre of other planets looks like. Today we are going to explore this hidden realm in this video. The planetary core consists of the innermost layers of a planet. They can be entirely solid or entirely liquid or maybe a mixture of both solid and liquid layers as, in the Earth’s case. The size of different cores in our solar system varies. They can be about 20% to 85% of a planets radius.

Gas giants are also believed to have cores, though having cores much smaller than those of terrestrial planet, but some have a core larger than Earth. Jupiter has one 10-30 times heavier than Earth. All terrestrial planetary bodies (Earth, Venus, Mars, Mercury, and Moon) have similar inner structures and consist essentially of iron cores and silicate shells. Based on geological and petrological data available, they evolved during a similar scenario, as evidenced by existence of crucial turning point at the mid-stages of evolution of their tectonomagmatic processes, associated with the involvement of new geochemical-enriched material in geodynamic processes. However, according to paleomagnetic data, the magnetic field on Earth existed about 3.45 Ga. Because a new substance began to take part in tectonomagmatic processes much later, it is considered that liquid iron, responsible for the magnetic field in Paleoarchean, was derived from chondrite material of the primary mantle. This iron, in the form of a heavy eutectic Fe + FeS liquid, flowed down and accumulated on the surface of the still-solid primordial core, generating a magnetic field, but did not participate in the geodynamic processes. Only melting of the primordial iron core, which occurred already in the middle of Paleoproterozoic, led to a dramatic change in the development of our planet. Very likely other terrestrial planetary bodies—the Moon, Venus, and Mars—were developed following the same scenario; the situation on the Mercury is unclear yet.

So lets take a closer took at each of them one by one-

Mercury- Mercury’s outer core is composed of liquid metal, and now scientists have found that Mercury’s inner core is solid and nearly the same size of Earth’s inner core. Its core nearly fills 85% of the volume of the planet. This large core is huge compared to the other planets in our solar system.
VENUS- Venus is much like Earth, in its size and density as they both are made of similar components. It probably has a metallic core, a mantle, a mantle made up of dense rock and a crust of less dense rock.
EARTH- More than 90% of Earth’s mass is composed of silicon, oxygen, iron and magnesium, elements that form the crystalline elements known as silicates. The crust accounts for only 0.4% of the Earth’s mass, and 0.1% of the total iron present. The rest 80-85% of the iron is contained in the Earths core.
MARS- Not much is known about the interior of Mars. Its central core has a radius of about 1200 km- collected from isotope 2000 km, as indicated by its moment of inertia. Data collected from isotopic meteorites that the planet separated- into a metal rich core and a rocky mantle 4.5 billion years ago.
JUPITER- The atmosphere of Jupiter only makes ups a small fraction of the entire planet. No direct observations of the Jupiter’s core has been made and its hard to draw conclusions.
SATURN- Saturn has a low mean density which is provides and evidence that most of its composition is mainly hydrogen. Under the extreme pressure above one kilobar and extreme conditions, hydrogen is usually present as a liquid.
URANUS- Uranus has a higher proportion of elements heavier than hydrogen and helium.
NEPTUNE- Neptune has a mean density less than 30 percent of Earth’s and is the densest among the gas giants.

-------------------------------------------------------------------------------------------
"If You happen to see any content that is yours, and we didn't give credit in the right manner please let us know at: Lorenzovareseaziendale@gmail.com and we will correct it immediately"

"Some of our visual content is under a Attribution-ShareAlike license. (https://creativecommons.org/licenses/) in it’s different versions such as 1.0, 2.0, 3,0 and 4.0 – permitting comercial sharing with attribution given in each picture accordingly in the video."

Credits: Ron Miller
Credits: Nasa/Shutterstock/Storyblocks/Elon Musk/SpaceX/Esa
Credits: Flickr
Credits: Institute/Universitè Paris Didero/
-Institut de Physique du Globe de Paris
Urutseg/Kelvinsong/Shea Huening/ Fredrik/ Surachit

#InsaneCuriosity #PlanetaryCore #TheSolarSystem