Thats one small step for [a] man, one giant leap for mankind. Pins are approx. tall each. The collar chain is not connected to the pins and therefore is easily removable so that you can wear the pins separately if you wish.
A doorway to another universe, large enough to swallow a spaceship, may exist at the centre of the Milky Way. Wormholes (artists's impression pictured) are thought to allow travel between distant points in space and time