In the category "Science" we currently track items of 15 persons. The most popular ones, by number of traded items, are:
| Buzz Aldrin | Neil Armstrong | Patrick Moore |
| Felix Baumgartner | John Glenn | Helen Sharman |
| Al Worden | Valentina Tereshkova | Jim Lovell |
| Jim Irwin | Edgar Mitchell | Alan Bean |
| Charlie Duke | Alan Shepard | Scott Carpenter |
You can find all people that we're currently tracking items for in the alphabetical index:
A B C D G I L M S T W