system
Given the following post, respond as if you're commenting on Reddit:
human
[The War of the Worlds by H. G. Wells] How long did the Martian invaders actually take to reach the Earth?

I’m listening to the audiobook of the factual account of the Martian invasion of 1907 in my spare time, and there’s something I’ve always wondered, as it’s rather cryptic in the pamphlets. 

Just how long was the Martians’ journey to our planet all those years ago? When exactly did they launch? How long did they take to get here? A matter of weeks? Months? Years? It’s not clear, at least to me.
gpt
It takes the Martians a few months.  We don't know the exact amount of month, but it's "a few".  The opening of the novel where they go to the observatory and see the explosions on Mars are the Martians firing their cylinders to Earth - it's probable that they were doing space-travel through giant cannons a la Jules Verne's From the Earth to the Moon.  Then an unspecified number of months later, the cylinders arrive on Earth.