Is energy in vacuum real? How do we know that this energy that can be borrowed and returned immediately is real if virtual particles didn't exist then?
Are vacuum fluctuations energy in vacuum? Are these virtual particles? How do we know there's energy in vacuum if they didn't exist? Do they exist?
What is a virtual particle? Does negative energy exist? If so, what is it? What's the chance of vacuum decay happening to our universe? What kind of organism could exist in the vacuum of space? If we are in space and space is a vacuum, why aren't we also in a vacuum? What is meant by true vacuum and false vacuum? What is space if not a vacuum? Do bacteria exist in space? What does "space is a vacuum" mean? Is the vacuum of space filled with dark matter? Will Virtual Physics be the physics of the future? Is 'empty' space filled with massive particles which are displaced by the particles of matter which exist in it and move through it? How do noble gases exist in air? Is the existence of dark matter and dark energy confirmed or just theoretical? Can an infinite amount of dark or vacuum or gravitational energy be created with expansion? What are some of the current theories for which particle makes up dark matter? Does dark matter really exist? How electron, positron and gamma photon created from vacuum? Do spirits really exist? Are dark matter and dark energy: energy? How do we know that dark matter exists? How ideal is a space vacuum? Could there be animals in the vacuum of space? What are dark matter and dark energy and do they make the empty space? Vacuumed sucked space is considered nothing. Is nothing considered to be present when nothing exists? Or was it considerd to be expanded empty space? What is dark energy in space? Where is dark matter? How do we know it exists? How are electron, positron and gamma photon created from a vacuum? How many elementary particles are there in the universe? What do you hypothesize dark energy to be? I don't mean answers like the cosmological constant. What do you think occurs physically?