Minatory:
having a menacing quality [Merriam-Webster]
Noted in “Moving to Mars – this show will help you become a real Martian,” Simon Ings (NewScientist, 26 October 2019):
STEP into Moving to Mars, an exhibition of Mars mission and colony design at London’s Design Museum, and you are confronted, immediately, with some very good reasons not to move there.
Minatory glowing wall-texts announce that Mars wasn’t made for you; that there is no life and precious little water; that, clad in a spacesuit, you will never touch, taste or smell the planet you now call “home”. As Lisa Grossman wrote for New Scientist a couple of years ago, “What’s different about Mars is that there is nothing to do there except try not to die”.