Wonders in the sky and men fainting with fear and with foreboding of what is coming on the world.

Examples that could resolve this market as "YES":

• Big impact on the Moon that is shocking to naked eye observers

• An exceptionally bright comet visible during the day, at minimum matching the Great Comet of 1744 (magnitude −7) with striking tail

• Supernova no dimmer than SN 1006 (-7.5 mag)

• Satellite constellation similar to Starlink trains, but order of magnitude more striking

• A big space station visible to the naked eye with angular diameter larger than the moon

• Perhaps some extreme northern lights (if even physically possible) visible on all latitudes, turning night into day, etc.

• etc.

Should be seen from multiple continents; a bright meteor will not normally count.