Earth, yes. Sun, no.
The coolest layer of the Earth is the lithosphere, which is the rigid outermost layer consisting of the crust and upper mantle. This layer's temperature decreases with depth, making it the coolest part of the Earth's structure.
Surface of the sun is hotter.
Earth does have a crust, made mostly of rock. The sun, however, does not. Sol (the sun), like most stars, is a very large ball of plasma, so the only part of it comparable to a solid is its core, which is under an extreme amount of pressure.
The energy leaves the sun as light from the region called the photosphere. This is the visible surface of the sun where most of the sunlight we receive on Earth originates.
At the equator the surface of the Earth is a right angles to the rays of light coming from the Sun. As the Earth is a globe, as one moves North or South, away form the equator, the surface of the Earth begins to tip away from facing the Sun until, at the poles, the surface of the Earth is parallel to the Rays coming from the Sun. This means that as one moves away from the equator, the surface of the Earth actually receives less of the Sun's energy.
The sun does not have an outer crust as it is not solid. The "surface" of the sun, called the photosphere, is about 10,000 degrees Fahrenheit.
the earth has a crust but the sun appears to not have a crust
The sun is much hotter than the Earth's crust. The temperature at the Earth's core is estimated to be around 5700 degrees Celsius, whereas the temperature at the surface of the sun is about 5500 degrees Celsius.
The sun... and the earth's mantle. The surface of the earth is mainly warmed by radiation from the sun - but we also get some heat through the ground - from the molten mantle underneath the Earth' crust.
The Sun does not have a "crust"; the surface of the Sun is 12,000 degree-hot hydrogen plasma.
The sun does not have a solid surface like Earth. It has different layers, including the core, radiative zone, and convective zone, but no distinct crust. The sun is a giant ball of gas primarily composed of hydrogen and helium.
There is no such thing as half of the Earth. If you are referring to half of the spherical shape of the Earth then it will be a hemisphere.
the answer is the sun
The coolest layer of the Earth is the lithosphere, which is the rigid outermost layer consisting of the crust and upper mantle. This layer's temperature decreases with depth, making it the coolest part of the Earth's structure.
The visible surface of the sun is called the photosphere. It emits light that we can see, and is where most of the sun's energy is radiated into space.
Geothermal energy is not directly impacted by the sun, as it is derived from the heat within the Earth's crust. However, the sun's energy can indirectly influence geothermal systems by affecting surface temperatures and contributing to the Earth's overall heat budget.
Surface of the sun is hotter.