My vote would be for some unfinished math problems. If they get it and then send it back to us with answers (not neccessarily the right answers as getting anything back in this instance would be beyond mind blowing) then we know that numbers are a truly universal thing and subsequently 'real'.

Is this supposed to be the cowl since they are obviously going for a batman vibe here.

Seems pointless if it is not capturing energy to charge your devices.

I wonder what the range on that is? Could use to send power to far off satelites or spaceships, if you want to get really fancy

With its significant mass, the planet exhibits a surface gravity of about 30 m/s², which compares to Earth's 9.78 m/s². That's over three times as much.

I've made some terrible choices in my life...

Snarf?

methinks they are not veins per se but battle scars since this is an older version of the bats.

DAT ASS!