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Another planet in our solar system? Sure. But even the nearest planet beyond our Solar system is about 11 light years away. And getting there anytime soon is an unfeasible goal according to Physics. Perhaps the Earth would be different 50 to 100 from now, but I wouldn't bet too much on any exciting activity going on outside of our planet.

Okay, maybe a better word choice would have been "certain" technologies. Seeing photographs of the 50s in 2050 won't seem all that amazing.

Unless we figure out how to create realistic full-color 3D holograms, or at least highly-improved glasses-free stereographic displays. In that case, anything pre-stereography will look very "flat", and the relatively few stereographic photos taken today could have the same impact as these color photos from the article

Sci-fi has trained us to expect all the things you mention so when they arrive we probably won't feel that anything much has changed.