The leading suspects in the half - century
old mystery of the origin of the highest - energy cosmic particles in the universe were in galaxies called «active galactic nuclei,» which have a super-radiating core region around the central supermassive black hole.
Not exact matches
The
origin of the moon is a
mystery as
old as the tides.
RESEARCHERS HAVE SOLVED a 60 - year -
old mystery regarding the
origin of the heaviest elements in nature, conveyed in the faint starlight from a distant dwarf galaxy.
Enter Finn Holmes — the mysterious, sexy guardian who's been watching over Wendy until she was
old enough to learn the truth about her supernatural
origins — and the revelation
of a hidden world full
of mysteries, dangers, and untapped powers that Wendy never knew she had.»
The
origin of Maine Coons remains a
mystery, but they are likely to be the
oldest cat breed native to America.
The
origin and meaning
of these 2,000 - year -
old figures remains a
mystery.