Space shuttle mission name?

2 ⤊

Last mission was STS 121, next one is STS 115.
Why are they not in numerical order?

2006-08-23 05:58:47 · 2 answers · asked by frigon_p 5 in Science & Mathematics ➔ Astronomy & Space

Missions are numbered in the order they are planned. The flights, however, often go out of their original sequence.

2006-08-23 06:04:14 · answer #1 · answered by mzJakes 7 · 2⤊ 0⤋

They are numbered in decending order. When they reach zero, the world will end.

2006-08-23 06:05:15 · answer #2 · answered by Anonymous · 0⤊ 2⤋