I found the sets used on The Empath
to have a kind of Lost In Space quality about them. Devices with lots of little flashing lights and dark cavernous spaces in between them.
One of my favorite "impossible scenes":
Thanks for the pic; I love those things.
"The Empath" didn't just use the economical (empty) black soundstage trick so often seen on LOST IN SPACE. They also used the actual freezing tubes from the Jupiter 2 interior as Vian set dressing. LIS had been canceled by the time "The Empath" was filmed.