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?
Do virtual particles in vacuum really exist?
What is a virtual particle? Do bacteria exist in space? What is meant by false vacuum? What is meant by true vacuum and false vacuum? Is 'empty' space filled with massive particles which are displaced by the particles of matter which exist in it and move through it? What kind of organism could exist in the vacuum of space? Do elementary particles have shape? If we are in space and space is a vacuum, why aren't we also in a vacuum? What's the chance of vacuum decay happening to our universe? Do the names of the particles sound silly? How ideal is a space vacuum? Are vacuum tubes still used in computers? Do spirits really exist? How many particles have we discovered? What is space if not a vacuum? Is the vacuum of space filled with dark matter? What is virtual? How many particles were discovered yet? What does "space is a vacuum" mean? Are subatomic particles visible? Does an object moving in a vacuum lose mass? What are virtual images in physics? Can we possibly have particles with negative mass? What are some of the current theories for which particle makes up dark matter? What are the chances of a vacuum metastability event hitting the universe in the future? Do ghosts really exist? Do ghosts really exist? Can electrons flow through vaccum? Do ghosts and spirits really exist? Do ghosts really exists?