United Launch Alliance's years-long delays with its new Vulcan rocket have flipped the script for national security missions, making SpaceX the new reliable provider.

SpaceX launched an advanced GPS satellite today (May 30) on record-breaking short notice. A Falcon 9 rocket is lifted off from Cape Canaveral Space Force Station in Florida today at 1:37 p.m. EDT (1737 GMT), carrying the GPS III SV-08 spacecraft to orbit for the U.S. Space Force.

A remarkable schoolyard brawl erupted online Thursday between President Donald Trump and his former "First Buddy" Elon Musk during which the pair traded insults and barbs. The war of words reached a crescendo during the afternoon when Trump threatened Musk's federal contracts.

SpaceX launched an advanced GPS satellite for the U.S. Space Force from Cape Canaveral Space Force Station in Florida.

As new rockets and space companies arrive on the scene, this workhorse of a rocket, the Falcon 9, remains the most common rocket launched from Florida launch pads. It debuted 15 years ago this week, and has changed not only the launch cadence on the Space Coast but the entire industry.

A SpaceX Falcon 9 rocket launched the eighth Global Positioning System III space vehicle to orbit on Friday from Cape Canaveral Space Force Station under a National Security Space Launch contract with the U.S. Space Force, demonstrating the capability to deploy a satellite in three months.

Space science experts told ABC News SpaceX has been essential to NASA’s missions and the breakdown of a relationship would leave a hole that would be hard to fill.