Q&A with Mimi Aung, Mars Helicopter project manager at JPL (members only)

With eyes on Tropical Storm Eta approaching South Florida, the four astronauts set to launch next Saturday on a SpaceX Crew Dragon spacecraft arrived at NASA’s Kennedy Space Center on Sunday after flying from their home base in Houston.

A capsule containing moon rocks landed in a remote, snow-covered corner of China Wednesday, bringing home the first samples from the lunar surface in 44 years and completing the Chinese space program’s most challenging robotic mission to date.

Within days, NASA is expected to select a winner from a roster of nine eligible companies to try and become the first commercial entity to accomplish a soft landing on the moon with a robotic spacecraft. The privately-developed probe would be the vanguard in a series of unpiloted missions intended to deliver science instruments to the lunar surface and prepare for a human expedition as soon as 2024.