Planets form through collisions of smaller pieces of rock and dust, and eventually accrete enough matter to become substantially large. There is absolutely no way for a planet to form with a hollow interior; it should have been compacted during its formation.
Can there be hollow planets?
Although you could in theory have a planet that orbits in a donut shape and in that sense be hollow. But there wouldn’t be any gravity on the planet, as in, you couldn’t walk on the planet since everything is in freefall around the center.
How would gravity work on a hollow planet?
The gravity outside the hollow planet “pulls” toward the center. And, given the fact that gravity always “pulls” toward mass regardless of the orientation or configuration of the mass, inside a hollow planet gravity also “pulls” toward the inner surface.
Gravity would be weaker on Hollow Earth than on Outer Earth Kong, Hollow Earth has the same gravity as Earth’s surface. This should make sense since the force of gravity on an object is F = m*g, where m is the mass of said object and g is the gravitational acceleration, or 9.8 m/s².
Is Mercury hollow?
The hollows’ fresh appearance and relative youth compared to the craters with which they’re often associated suggest that contrary to prevailing theories, Mercury’s surface is still evolving as volatile materials excavated by impacts vaporize at the surface, creating these distinctive voids.
What would happen if Earth had no core?
If the core were to cool completely, the planet would grow cold and dead. It also would get a little dark: Power utilities pull radiant heat from Earth’s crust and use it to heat water, the steam from which powers turbines to create electricity [source: Anuta].
Is there gravity in space?
Because gravity is everywhere in space, objects in space are always falling: towards the earth, towards the sun, and towards the galactic center. There are two reasons that objects seem to be floating without gravity in space when they are really falling. Each galaxy is held together by strong gravitational forces.
Is the Earth solid or hollow?
The time it takes for seismic waves to travel through and around the Earth directly contradicts a fully hollow sphere. The evidence indicates the Earth is mostly filled with solid rock (mantle and crust), liquid nickel-iron alloy (outer core), and solid nickel-iron (inner core).
Where is the center of gravity of a hollow sphere?
If by “a hollow object” you mean a spherical shell ” a theoretically perfect sphere Moon, with a perfect sphere of material removed from the center: The center of mass, and therefore the center of gravity remains at the geometric center.
What is the gravity inside a hollow sphere?
The gravitational force on an object within a hollow spherical shell is zero. The gravitational force on an object within a uniform spherical mass is linearly proportional to its distance from the sphere’s center of mass (COM).
What is the gravitational field inside a hollow sphere?
The gravitational field inside a hollow spherical shell is zero, as potential is constant inside.
Why did Godzilla burn a Hollow Earth?
Kong occurs when Godzilla, suddenly alarmed by Kong’s activation of the Hollow Earth energy source, fires up his atomic breath and blows a hole to the center of the Earth, opening a new passage from Hollow Earth to the surface.
What is Mercury’s spider?
What is the biggest crater on Mercury?
Caloris Basin ” Impact Site This is one of the largest impact basins in the solar system and the largest feature on Mercury. The Caloris Basin is 1300 kilometers (810 miles) in diameter.
Why does the moon almost have no erosion?
The moon has almost no erosion because it has no atmosphere. That means it has no wind, it has no weather, and it certainly has no plants. Almost nothing can remove marks on its surface once they are made.
Why is the core hot in the first place?
The interior of Earth is very hot (the temperature of the core reaches more than 5,000 degrees Celsius) for two main reasons: The heat from when the planet formed, The heat from the decay of radioactive elements.
Is Earth’s core hotter than Sun?
The Earth’s core is hotter than the outer layer of the Sun. The Sun’s huge boiling convection cells, in the outer visible layer, called the photosphere, have a temperature of 5,500°C. The Earth’s core temperature is about 6100ºC. The inner core, under huge pressure, is solid and may be a single immense iron crystal.
What happens if Earth stops spinning?
If Earth were to stop spinning but continue to orbit the sun, a “day” would last half a year, and so would the night. It could warm up much more during the day and cool down much more during the night. This would affect the climate on Earth.
Can you fart in space?
Surprisingly, that isn’t the biggest problem associated with farting in space. Though you’re definitely more likely to worsen a small fire when you fart, it won’t always injure or kill you. The worst part about farting in space is the lack of airflow. Let’s take a step back and remember how farting on Earth works.
Does space have a smell?
A succession of astronauts have described the smell as ‘… a rather pleasant metallic sensation … [like] … sweet-smelling welding fumes’, ‘burning metal’, ‘a distinct odour of ozone, an acrid smell’, ‘walnuts and brake pads’, ‘gunpowder’ and even ‘burnt almond cookie’.
Can you start a fire in space?
Fires can’t start in space itself because there is no oxygen ” or indeed anything else ” in a vacuum. Yet inside the confines of spacecraft, and freed from gravity, flames behave in strange and beautiful ways. They burn at cooler temperatures, in unfamiliar shapes and are powered by unusual chemistry.
Is Mecca the center of the Earth?
The “Mecca: the Center of the Earth, Theory and Practice” conference was organized and attended by Muslim theologians and other religious officials from across the world.
Will the Earth core cool down?
The Earth’s core does, in fact, cool down over time, and eventually it will solidify completely. Since the Earth’s magnetic field (which protects the atmosphere and biosphere from harmful radiation) is generated by molten iron in the core, the solidification of the core might seem quite foreboding.
Why can’t we go to the center of the Earth?
We cannot go to the centre of the earth, since the temperature and pressure increase enormously as we go deeper inside the earth. Also, no technology has been invented yet to travel deep into the earth.
What is centre of gravity of a body?
Your centre of gravity is the point where the mass of the body is concentrated. Centre of Gravity. The centre of gravity (COG) of the human body is a hypothetical point around which the force of gravity appears to act. It is point at which the combined mass of the body appears to be concentrated.
Is it possible for an object to have more than one center of masses?
By definition, an object can only have one center of mass. This is because the center of mass is the only point of the object where the weighted relative position of the distributed mass of the object is equal to zero.
Why is gravity at center of earth Zero?
If you are at the center of the earth, gravity is zero because all the mass around you is pulling “up” (every direction there is up!).
What is Shell Theorem 2?
2. If the body is a spherically symmetric shell (i.e., a hollow ball), no net gravitational force is exerted by the shell on any object inside, regardless of the ob- ject’s location within the shell.
What is Shell theorem electrostatics?
The shell theorems state that (i) the electric field inside a uniform shell of charge is zero and (ii) that the field outside the uniform shell of charge is the same as that of a point charge with the same total charge as the shell.
Is gravitational field 0 inside a spherical shell?
R : Gravitational field inside a spherical shell is zero everywhere .
What will be the weight of a body at the centre of the Earth?
The weight of a body placed at the centre of the earth is zero. This is because the mass at the exact cenrte of the earth is zero.
What is F GMm R 2?
F = GMm/r^2 (gravitational force = G * mass of primary * mass of secondary / orbital radius squared) a = GM/r^2 (gravitational acceleration caused by an object = G * mass of that object / orbital radius squared) When a primary object attracts a secondary object, the force between them follows an inverse square law with …
Where is the apparent acceleration of the Earth maximum?
The effect of rotation of the Earth on the value of g at the equator is maximum.
How did King Kong get out of Hollow Earth?
Is Godzilla friendly to humans?
Although Godzilla does not like humans, it will fight alongside humanity against common threats. However, it makes no special effort to protect human life or property and will turn against its human allies on a whim.
How old is King Kong now?
What is on planet Mercury?
Along with Venus, Earth, and Mars, Mercury is one of the rocky planets. It has a solid surface that is covered with craters like our Moon. It has a thin atmosphere, and it doesn’t have any moons. Mercury likes to keep things simple.
How was the Caloris basin made?
The Caloris Basin is the largest feature on the surface of Mercury. This crater was formed by the impact of a large meteorite in the early formation of the solar system. We only know what half of the crater looks like, because the other half was in darkness when Mariner 10 flew by the planet.
What is the most likely cause for scarps on Mercury?
The scarps on Mercury were probably caused by: the interior cooling and shrinking. The composition of Mercury’s crust is: similar to the crust of the other terrestrial planets.
Why did Mars lose its liquid water?
Based on data gathered by NASA’s Mars Atmosphere and Volatile Evolution (MAVEN), scientists suggest that dust storms rising from the Martian surface appear to have been slowly sucking away the planet’s water over the course of millions of years, sweeping water molecules up on a wild journey into the atmosphere.
Why is Venus so hot?
Even though Mercury is closer to the Sun, Venus is the hottest planet in our solar system. Its thick atmosphere is full of the greenhouse gas carbon dioxide, and it has clouds of sulfuric acid. The atmosphere traps heat, making it feel like a furnace on the surface. It’s so hot on Venus, the metal lead would melt.
How hot does it get on the side of Mercury closest to the Sun?
Mercury’s surface temperatures are both extremely hot and cold. Because the planet is so close to the Sun, day temperatures can reach highs of 800°F (430°C).
What makes a blood moon red?
The moon is fully in Earth’s shadow. At the same time, a little bit of light from Earth’s sunrises and sunsets (on the disk of the planet) falls on the surface of the moon. Because the light waves are stretched out, they look red. When this red light strikes the moon’s surface, it also appears red.
Why is the moon so scarred with craters?
Because of tectonics, the surface of Earth is recycled many times throughout its long history. As a result, very few rocks on Earth are as old as the rocks on the Moon. The Moon has not had tectonics for billions of years. That’s a lot more time for craters to form and stay put.
Does the Sun have gravity?