Artemis II launches NASA astronauts to moon
Digest more
On January 28, 1986, Space Shuttle Challenger broke apart just 73 seconds after liftoff. Pilot Michael Smith's final words revealed something was very wrong.
For more than 60 years, nearly every large rocket used some combination of the same liquid and solid propellants. Refined kerosene was favored for its easy handling and non-toxicity, hydrazine for its storability and simplicity,
Commercial launch providers continue to advance propulsion technology with a renewed focus on liquid oxygen and methane propelled rockets and spacecraft. As systems grow in scale, carrying millions of pounds of propellant,
Launch preparations have begun for the Artemis II mission, NASA’s planned lunar fly-around by four astronauts that will be the first moon trip in 53 years