We might ask where in the cosmos the Solomons might be as if we were to assume this is where the ship had just come out from..
In 2009, Alien's editor Terry Rawlings allowed documentary maker Dennis Lowe to scan his editing script.
On page 8 of this copy of the script with extra information written in pen, Ripley is found to announce over the airwaves on the transmission unit, "This is commercial vessel Nostromo, out of Houston" as if Houston was added as an extra detail.
c) Space port in the Solomon Islands?
In the Alien Legacy set released in 1999, Charles De Lauzirika included in the character histories that a Space port was established in the Solomon Islands on planet Earth, which is an interesting idea.
d) Reference to King Solomon's Mines?
A question might be about whether the fact that the Nostromo is a mining vessel out of the Solomons is a straight reference to the book King Solomon's Mines Sir H. Rider Haggard?
Joseph Conrad's novel Nostromo (published in 1904) and Kings Solomon's Mines (published in 1885) are set in a world of people searching for precious metals.