Table 1 Several flight opportunities and their characteristics
From: Effects of spaceflight and simulated microgravity on microbial growth and secondary metabolism
| Flight opportunities | Time of duration | Gravity level (g) |
|---|---|---|
| Drop tower | 2–9 s | 10− 5 - 10− 2 |
| Parabolic flight | 15–30 s | 10− 3 - 10− 2 |
| Sounding rockets | 6–15 min | 10− 4 - 10− 3 |
| Recoverable satellites/space shuttle | 1–2 mon | 10− 5 - 10− 3 |
| Space station (spacelab) | Several years or permanent | 10−6 - 10− 5 |
