In all probability - yes.
In actually observation, then no.
The chances are high, but our current technology doesn't allow us to determine individual stars let alone planets.
The apparent magnitude of the Cartwheel Galaxy is 15.2
The Cartwheel Galaxy ( ESO 350-40) is a lenticular galaxy about 500 million light years away in the constellation Sculptor.
The Cartwheel Galaxy is a lenticular galaxy about 500 million light years away in the constellation Sculptor.It is about 150,000 light-years across.
Fritz Zwicky in 1941
The planets are part of the galaxy.
the cart wheel galaxy is bigger by a bit
there are millions and billions of galaxies. I will tell you 5 1:Our Milky Way galaxy 2:Cartwheel galaxy 3:Andromedia galaxy 4:Pegasus galaxy 5:Circinus
The Cartwheel Galaxy is about 150,000 light years across (about one and a half times larger than the Milky Way); However, it has a mass of less than 5 billion solar masses (the Milky Way has over a trillion).
It is possible that every galaxy has some planets. We just are starting to detect some planets in other galaxies.
The planets we know of, some 300 now, are all in the Milky Way galaxy.
Planets are not necessarily in a galaxy but chances are very slim that in a galaxy that is not just newly forming there would not be any exoplanets.
We expect the Andromeda galaxy to be just like our own Milky Way galaxy. We can see stars (suns) in the Andromeda Galaxy and just as stars have planets orbiting them in our galaxy, we believe that there must be planets also orbiting stars in the Andromeda galaxy.