Can an object touch another object and do repel each other.

No two objects can touch each other at the fundamental, atomic, subatomic, whatever you want to call it level.

The outside of the atoms in your butt are filled with electrons (negative charge) which repel the outside of the atoms in your chair.

Oh and by the way, even if there is no repulsion, atoms have no hard boundaries, they are just faint probability clouds that change every instant, so even if there was no repulsion, two objects will never 100% touch each other.

But . . . there are a couple of exceptions

• Star Fusion
  

A well known fact is that the Sun fuses hydrogen atoms together to make helium to get its energy, so in crazy temperatures and pressures, two atoms can actually fuse together and touch each other.

• Black Holes
  

A black hole is infinitely dense, with infinite mass but infinitely small area. Anything unfortunate enough to fall into one would eventually touch the singularity (not considering the time and space time shifts which are too complicated for anyone to understand).

• Neutron Stars
  

A star with about equal mass as our sun will turn into a neutron star, which is a sea of neutrons that all have neutral charge, which all touch each other to form an incredibly dense celestial body the size of the Earth.

Keep on thinking

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