there is an advanced idea called "Quantum Mechanics' that allows this but it is not easy to understand
Position is one quantity, Momentum or Mass times velocity is a different concept
the 'uncertainty' principle says it is forever impossible to know BOTH position and momentum to an unlimited accuracy. if you know where a thing is it is impossible to know how fast or which direction it is going. any attempt to measure its velocity means its location is unknown
that applies to energy ( mass-energy) and time as well. a particle can 'pop into existence for a very short time, but if it stays around its energy is unknown and it is not existing
Position is one quantity, Momentum or Mass times velocity is a different concept
the 'uncertainty' principle says it is forever impossible to know BOTH position and momentum to an unlimited accuracy. if you know where a thing is it is impossible to know how fast or which direction it is going. any attempt to measure its velocity means its location is unknown
that applies to energy ( mass-energy) and time as well. a particle can 'pop into existence for a very short time, but if it stays around its energy is unknown and it is not existing
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No, it is scientific law that something cannot come from nothing reguardless of size.
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No. The above answer stills comes from something. However, matter and energy cannot spontaneously appear into the world (well... they might be able to and we don't know about it yet, but it's unlikely).