Well, stars are dots - and we don't spend much time looking at them unless they are double stars or open clusters of stars. Much more interesting are emission and reflection nebula, globular clusters, galaxies and planetary nebulas. Your 25mm eyepiece will be fine for them.
Your 9mm eyepiece gives you 89X power, which will show you the bands on Jupiter, the moons around Jupiter, the crescent phases of Venus, and the rings of Saturn.
Though, as already suggested, you'd want a higher power eyepiece to get better views of those planets.
Regards,
Renato
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