@kurtsh@mastodon.social2026-08-12 17:10:26
Watch Carl Sagan explain the 4th dimension.
#carlsagan #4thdimension #science
@kurtsh@mastodon.social2026-08-12 17:10:26
@kurtsh@mastodon.socialWatch Carl Sagan explain the 4th dimension.
#carlsagan #4thdimension #science