What happens? A new universe is formed that wipes out the old universe in seconds.
Carole King
“I Feel The Earth Move”
I feel the earth move under my feet
I feel the sky tumbling down, tumbling down
I feel my heart start to trembling
Whenever you’re around
Ooh, baby, when I see your face
Mellow as the month of May
Oh, darling, I can’t stand it
When you look at me that way
I feel the earth move under my feet
I feel the sky tumbling down, tumbling down
I feel my heart start to trembling
Whenever you’re around
Oh, darling, when you’re near me
And you tenderly call my name
I know that my emotions
Are something I just can’t tame
I’ve just got to have you, baby
I feel the earth move under my feet
I feel the sky tumbling down, tumbling down
I feel the earth move under my feet
I feel the sky tumbling down
I just lose control
Down to my very soul
I get a hot and cold all over
I feel the earth move under my feet
I feel the sky tumbling down,
Tumbling down, tumbling down...
. Yeah but because of time dialation, everyone inside the universe experiences it as taking billions of years.
Maybe not that but it would be VERY interesting to see if neutronium detonates when the neutron star is spaghettified via tidal forces and the 1.4+ Solar Mass pulling down on the neutronium is released.
I would bet there would be a HUGE explosion as it expands from degenerate matter status.