Everything in the universe originated from a single point. how was it possible for everything in the universe to have occupied a single point in space?

It is believed that mass and energy are inversely proportional and thus huge mass can come together into a single point if it posses intense amount of energy . Considering this concept the mass of universe can be condensed into a single point.

All mass in the Universe was once energy, and energy does not take up space.

Explanation:

Everything in the Universe was able to occupy a single point because all mass in the Universe was once energy, and energy does not take up space.

Mass takes up space, but energy does not take up space. Energy can be converted to mass, and mass can be converted to energy.

This was a Study Island Question that I got wrong, so I thought that I would put the right answer for others.