One of the brightest surprises will be when Betelgeuse goes super nova    (the biggest star in Orion's belt). It will shine with the brightness of the fullmoon for 14 days and nights. For this to happen in your lifetime is less than one in a milion chance but people do win the lottery. This is a conscience guess and not a measure of my daily presience.

PS the super nova will not hurt Earth and to see it in your life time means it has already exploded.