A Bussard ramjet is a type of starship hypothesized in 1960, which became a staple of science fiction. The ramjet operates by sweeping interstellar hydrogen as fuel using a magnetic field.
Researchers now say the magnetic net would need to be at least 4,000 kilometers wide.
Rocket Lab plans to capture falling rockets for re-use by catching them in mid-air with a helicopter. This is actually precedented—NASA used to catch film canisters in mid-air in the 1960s. Space Explored
Want to pretend to live on Mars? For a whole year? Apply now. By Seth Borenstein at the AP: NASA is looking for staff for a simulated Mars habitat on Earth.
Why does outer space look black?
This turns out to be a question with a surprisingly interesting and complicated answer.