Guion Bluford: First African-American in space Guion "Guy" Bluford is a former NASA astronaut who was the first African-American to fly into space. He flew four shuttle missions. Space · Feb 8, 2017
Spooky space: 12 haunting images of our cosmos Here are some of the most spine-chilling space photos to scare your pants off this Halloween. Space · Oct 31, 2016
What would happen if the moon disappeared tomorrow? The moon controls the tides, impacts marine ecosystems, and subtly influences time on Earth. So what would happen if the moon suddenly disappeared? LiveScience · Jul 23, 2016
Charon: Pluto's dwarf planet partner As the gatekeepers to the Kuiper Belt, Charon and Pluto are a unique double dwarf planet system. Space · Feb 24, 2016
What are globular clusters? Globular clusters are densely packed, spherical collections of ancient stars. Here we explore them in more detail. Space · Jul 22, 2015
What is DARPA? Everything you need to know about the Defense Advanced Research Projects Agency (DARPA) Space · Apr 30, 2015
Buran: The Soviet space shuttle that flew just once The Buran spacecraft was the Soviet Union's response to NASA's space shuttle program. Space · Apr 21, 2015
Donald "Deke" Slayton: Mercury astronaut who waited more than a decade to fly to space Slayton made his first space flight in 1975 as the Apollo docking module pilot of the Apollo-Soyuz Test Project (ASTP) mission. Space · Jan 30, 2014
What is the shape of the universe? How do astronomers describe the shape of the universe, and what could it mean for the fate of the cosmos? Space · Jan 16, 2014
The 9 most massive numbers in existence From the humble trillion to Graham's number, here are some of the most massive numbers ever conceived by humans. LiveScience · Feb 5, 2013
Sojourner: The first successful Mars rover Mars Pathfinder carried the first rover to Mars, using an innovative airbag landing system to bounce safely onto the surface. Space · Sep 24, 2012
The most memorable space shuttle missions The milestones, heartbreaks, and discoveries that shaped NASA's 30-year shuttle program. Space · May 30, 2011