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The booster of the Space Launch System was in good condition after a test was cut short, officials said.

Here’s what you need to know about Saturday’s second launch attempt of NASA astronauts in the Crew Dragon spacecraft.

The agency confirmed its mission was proceeding smoothly, but made the announcement amid the puzzling departure of a top NASA official.

The crew will be the first to travel to orbit from American soil since the space shuttle stopped flying in 2011.

The spacecraft’s controllers on Earth succeeded in steering the spacecraft, demonstrating that mylar sails could be used for propulsion.

The Planetary Society deployed LightSail 2, aiming to further demonstrate the potential of the technology for space propulsion.

The country’s hopes to become the fourth to land on the moon were put on hold Monday.