planetary orbits around stars in binary systems are always unstable
Circumbinary planet Further work on the system[8] showed that the orbits proposed for the candidate planets were catastrophically unstable on timescales far shorter than the age of the system. Indeed, the authors found that the system was so unstable that it simply cannot exist, with mean lifetimes of less than a thousand years across the whole range of plausible orbital solutions. Like other planetary systems proposed around similar evolved binary star systems, it seems likely that some mechanism other than claimed planets is responsible for the observed behaviour of the binary stars - and that the claimed planets simply do not exist.
Limit of a function (the Dirichlet function) has no limit at any x-coordinate.
Swallowing 5) Closure of the nasopharynx
Bull riding The flank strap
Hubble sequence Our own Milky Way is generally classed as SBb or SBc[14], making it a barred spiral with well-defined arms.
Babylon Babylon (