system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Have any witches/wizards attempted space travel through magical means?

Related question: what spells might a wizard use to facilitate space travel? 

I've read that apparation becomes increasingly difficult with larger distances, could an immensely powerful wizard apparate to the moon?
gpt
Wizards who use the bubble head charm don't seem to have any concerns about decompression sickness, so it's plausible that it regulates pressure as well as provides oxygen, and might be used in space travel or easily adapted to that.

As for getting there, apparition is out.  Only the most highly skilled wizards can travel more than a few hundred Km, and the Moon is much farther than that.  There are no fireplaces on the moon, so floo powder is out, and brooms are limited to a few Km of altitude.  A portkey would be a possibility, assuming a wizard had the foresight in the 50s through 70s to make a probe into one.  If not, their options for getting there wouldn't be too bad, a lot of wizard spells could be very helpful in recreating or simplifying muggle-style space vehicles (for example, imagine a weightlessness spell on a rocket, or a two-way mirror instead of a radio).