Why aren't lemons spherical?

Actually there are many objects in nature are not spherical. Even plane Earth is not spherical as they taught us in intro science textbook. read more

Actually there are many objects in nature are not spherical. Even plane Earth is not spherical as they taught us in intro science textbook. But to answer your question, I think gravity plays an important role here from prohibiting the lemon, or any other type of fruits to grow symmetrically. read more

There are spherical galaxies existing in the universe, but they may be not totally spherical. They fall into two basic categories - those elliptical galaxies that are pseudo-spherical in shape and the much smaller, so-called Dwarf Spheroidal Galaxies that are found associated with our own Galaxy and other large galaxies in the Local Group. read more

The planets form molten for the same reason they get spherical. The gravitational energy is larger than the binding energy between atoms in the solids (apart from some prefactors) - the impacts release enough energy to melt the material. read more

A spherical object satisfies this equilibrium. Since Phobos and Deimos are rather small, their gravitational pull isn't enough to form a spherical object. Scientists aren't necessarily sure about where the moons came from, however, I've read that the moons may have been formed through accretion. read more