first
preceding, coming before all others of in a series or partially ordered set of elements of the same kind or having common properties; the ordinal of one; earliest
first printing
first print run of an edition of a printed work
first direct image of a black hole
image of a black hole in M87 by Event Horizon Telescope
Ferris Wheel
the original Ferris Wheel, designed and built as the centerpiece of the 1893 World's Columbian Exposition in Chicago, Illinois