Soon to be 2.0, I hear the Monolith is transmitting radio waves again. Haven't hear from Dave, though.
Clark originally had the event happening on Saturn. In Arthur’s story, Dave ‘fell’ into Iapetus, which orbits Saturn. Iapetus is the moon with a ‘seam’ of three ridges running completely around the circumference of the object.
Dave’s not here.
Jupiter isn’t close.
The smallest Brown Dwarf (we know of) to achieve stellar ignition is 50 Jupiter masses.
Made for a nice Science Fiction story tho.
For the OP, if you really want to blow their ‘minds’ tell them our star even has a name, and they used it before system.