Yes, it is possible to see other galaxies from both Earth and space telescopes. However, the level of detail and the number of galaxies visible depends on various factors such as the telescope's capabilities, observing conditions, and the distance of the galaxies.
From Earth, with the naked eye, we can see the Andromeda Galaxy (M31), which is the closest spiral galaxy to our own Milky Way. It appears as a faint, fuzzy patch in the night sky. Some other nearby galaxies, such as the Triangulum Galaxy (M33), can also be observed under dark and clear skies.
With the aid of telescopes, we can observe many more galaxies. Telescopes can gather more light and reveal distant objects that are otherwise invisible to the naked eye. Depending on the telescope's size, resolution, and sensitivity, we can see thousands, if not millions, of galaxies.
The Hubble Space Telescope, for example, has provided us with stunning images of galaxies located billions of light-years away. These images have greatly expanded our understanding of the universe and its vastness. Additionally, other space telescopes, such as the James Webb Space Telescope (set to launch in 2021), will further enhance our ability to observe and study galaxies in even greater detail.