To celebrate Space.com's 25th birthday, we're taking a look back at our favorite Lego space sets released since 1999. When you purchase through links on our site, we may earn an affiliate commission.

'Lego Space Projects' is available Tuesday (Aug. 17). When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Jeff Friesen's latest Lego book, "Lego ...