Video: Press site view of SpaceX resupply launch (members only)

A modest privately-funded instrument package built by a company in Luxembourg became the first commercial to the moon to get off the ground with a fiery nighttime launch aboard a Chinese rocket.

Cosmonauts Sergey Prokopyev and Dmitri Petelin floated outside the International Space Station Wednesday, unbolted an experiment airlock from the Rassvet docking compartment and then connected it to Russia’s Nauka multi-purpose laboratory module in a 7-hour, 11-minute excursion.

SpaceX’s plan to send a Dragon capsule to Mars in 2018 will be the first in a sequence of unmanned commercial missions to the rust-colored world before the first voyage with humans as soon as 2024, SpaceX founder Elon Musk said Wednesday.