First Primordial Black Hole Discovered: Smaller Than Sun, Witness to Universe's Birth

• Astrophysicists claim to have found direct evidence of a primordial black hole, formed just one second after the Big Bang.
• The discovery is based on a gravitational wave signal 'S251112cm' detected by LIGO, indicating a collision of two black holes.
• One of the colliding objects had a mass less than our Sun, suggesting it's not a typical star-formed black hole.
• Primordial black holes are theorized to have formed from dense matter collapse immediately after the Big Bang, before stars existed.
• This finding could also provide clues to the nature of dark matter, with future confirmation expected from ESA's LISA mission in 2035.