NASA Sites
| Rank | Website | Country Rank | Monthly Unique Visitors | Pages/Visit | Avg. Visit Duration | Bounce Rate |
|---|---|---|---|---|---|---|
| 1 |
 #5639 | 2.1M | 00:07:07 | 3.04 | 62.91% | |
| 2 |
 #351 | 1140148 | 00:25:29 | 3.9845822094527 | 52.59% | |
| 3 |
#10325 | 2.0M | 00:01:55 | 1.77 | 63.24% | |
| 4 |
#17838 | 922.1K | 00:12:15 | 5.80 | 48.10% | |
| 5 |
#25041 | 763.0K | 00:03:24 | 4.65 | 42.88% | |
| 6 |
#19941 | 930660 | 00:01:25 | 1.7532277146113 | 73.46% | |
| 7 |
 #28005 | 479036 | 00:02:51 | 3.791891103189 | 41.89% | |
| 8 |
 #857 | 434570 | 00:03:14 | 2.8826242521976 | 61.01% | |
| 9 |
#44343 | 497737 | 00:01:15 | 1.7038085955829 | 70.70% | |
| 10 |
 #1921 | 394702 | 00:02:03 | 1.5779566473804 | 68.42% | |
| 11 |
#53850 | 369116 | 00:01:44 | 1.9135211113317 | 60.04% | |
| 12 |
 #1380 | 201711 | 00:08:41 | 5.306679144032 | 44.31% | |
| 13 |
#3583 | 164118 | 00:13:02 | 2.4293320632549 | 76.22% | |
| 14 |
 #8228 | 120315 | 00:02:38 | 1.8151091385668 | 71.40% |
