The 2027 launch date for the Demonstration Rocket for Agile Cislunar Operations (DRACO) is on indefinite hold. Since initiating the program’s design phase two years ago, the DARPA-NASA ...

There are some animals, like mammals, reptiles, and amphibians that can fly to some extent even without wings. They, on the other hand, must force their body to take flight and keep them in the air.