Stephen Hawking once threw a party for time travelers as a playful experiment about whether traveling backward in time is possible. Invitations were sent after the party so only someone from the future could attend, but no one came. The idea connects to physics concepts like causality, which says causes must come before effects, and the constraints of relativity that make time travel to the past extremely difficult. Want more interesting content like this ? Follow gravitonomy :) Via : Unknown No copyright infringement intended. Kindly DM for Credit/Removal/Collaboration :) #stephenhawking #science #physics #timetravel #epsteinfiles