FastSaying

The blue stars in the disk are so short-lived that it is unlikely in the long 12-billion-year history of Andromeda that such a short-lived disk would appear now. That's why we think that the mechanism that formed this disk of stars probably formed other stellar disks in the past and will trigger them again in the future. We still don't know, however, how such a disk could form in the first place. It still remains an enigma.

Related Quotes

The blue stars in the disk are so short-lived that it is unlikely in the long 12-billion-year history of Andromeda that such a short-lived disk would appear now. We think that the mechanism that formed this disk of stars probably formed other stellar disks in the past and will trigger them again in the future. We still don't know, however, how such a disk could form in the first place. It still remains an enigma.
— Tod Lauer
BillionBlueDisk
Seeing these stars is like watching a magician pulling a rabbit out of a hat. You know it happened but you don't know how it happened.
— Tod Lauer
HappenedHatMagician
Now that we have proven that the black hole is at the centre of the disk of blue stars, the formation of these stars becomes hard to understand. Gas that might form stars must spin around the black hole so quickly - and so much more quickly near the black hole than farther out - that star formation looks almost impossible. But the stars are there.
— Ralf Bender
BlackBlueCentre
The dynamics within the core of this neighboring galaxy may be more common than we think. Our own Milky Way apparently has even younger stars close to its own black hole. It seems unlikely that only the closest two big galaxies should have this odd activity. So this behavior may not be the exception but the rule. And we have found other galaxies that have a double nucleus.
— Tod Lauer
CommonCoreDynamics
These planetary systems, if they do form and exist, are short lived because these massive stars explode as supernovae. So it's amazing that the raw material for planets could be found in such a hostile environment.
— Joel Kastner
ExistExplodeForm