Photos: EchoStar 19 launch as seen from press site

The core stage of NASA’s first Space Launch System heavy-lift rocket arrived at the Kennedy Space Center on Tuesday evening aboard a specially-built barge, completing a voyage by sea from a test site in Mississippi to begin final preparations for the first flight of NASA’s Artemis Moon program. Ground crews plan to transport the core stage into the Vehicle Assembly Building beginning around 5:30 a.m. EDT (0930 GMT) Thursday to join its two solid rocket boosters.

Four satellites set to join O3b’s expanding broadband network successfully launched Friday on top of a Russian-built Soyuz booster from French Guiana, joining 12 other craft linking developing nations, far-flung islands, cruise ships and other hard-to-reach locales with the Internet.

Two Chinese Beidou navigation satellites launched Thursday, growing the country’s home-grown space-based GPS network nearly 14,000 miles above Earth.