liquid lens
How NASA’s liquid lenses could revolutionize space exploration 
orbital debris
Space Force backs 125 teams to take down orbital debris
planetary defense
China is going to try to move an asteroid
Watch: Incredible jumping robot triples world record
hypoint hydrogen aircraft
This hydrogen aircraft could really work
falling rocket
Watch a helicopter attempt to catch a falling rocket (Updated)
electromagnetic warfare
Elon Musk’s Starlink fights off Russian attacks in Ukraine 
NASA uses “holoportation” in space for first time
electric airplane
Former NHL enforcer builds an incredible electric airplane