Aerospace

DEF CON hackers compete to hijack a satellite in orbit
A sunblock to save Martian explorers from radiation in space
See prototype of Mars-bound Starship take its first “hop”
Tracking the Crew Dragon: Return to Earth
How to watch the Mars 2020 rover launch
Meet NASA's autonomous vehicle — for Mars
What a simulated Mars mission can teach you about life
China Mars mission joins Emirates, with U.S. to follow
VR experience aims to change people’s perspective of Earth 
NASA’s plans for space tourism are becoming a reality