In the three decades of NASA's space shuttle program, hundreds of astronauts flew aboard the five spaceships. Find out about the missions, astronauts flew aboard the five spaceships. Find out about the missions, astronauts and vehicles and life in space.
This is an illustration from physics professor Peter Alway's 1995 book Rockets of the World. That little black-and-yellow smudge in the second row, that's the V–2. It’s quite amazing what a monster the Saturn V still is, almost 40 years in retirement.
There are more than 260 TLDs in use around the world, most of which are country code top-level domains (ccTLDs). The Country Codes of the World map includes 245 country codes, which encompasses all United Nations countries as well as numerous islands and territories.
This infographic shows how much and how people around the world are using social media. It breaks social media use down to three categories: active social networkers, messengers and mailers, content sharers, and joiners and creator of groups.