Electric Propulsion

Northrop Grumman servicer docks with active satellite in geosynchronous orbit

April 13, 2021 Stephen Clark

Northrop Grumman’s second robotic life extension spacecraft docked with an Intelsat satellite in geosynchronous orbit Monday, the first link-up between a commercial servicing mission and an operational communications craft.

Launch of asteroid deflection demonstrator slips to November

March 9, 2021 Stephen Clark

The launch of a NASA spacecraft designed to smash into an asteroid to try out a technique that could protect Earth from threatening space rocks has slipped from July until November, at the earliest, after development delays partially caused by coronavirus-related work slowdowns.

Lockheed Martin to buy rocket engine-builder Aerojet Rocketdyne

December 21, 2020 Stephen Clark

Lockheed Martin, the largest U.S. defense contractor, announced late Sunday that it has reached a deal valued at $4.4 billion to acquire Aerojet Rocketdyne, a supplier of engines to NASA’s Space Launch System moon rocket and United Launch Alliance’s Atlas, Delta, and Vulcan rockets.

ULA, SpaceX win contracts to launch satellites for SES in 2022

August 5, 2020 Stephen Clark

SES has selected United Launch Alliance and SpaceX to launch up to five new commercial C-band communications satellites from Cape Canaveral in 2022 aboard Atlas 5 and Falcon 9 rockets, officials announced Wednesday.

Photos: Atlas 5 rocket lifts off with U.S. military’s X-37B spaceplane

May 20, 2020 Stephen Clark

Launching the sixth mission of the U.S. military’s super-secret X-37B spaceplane program, a United Launch Alliance Atlas 5 rocket lifted off Sunday morning from Cape Canaveral and successfully delivered its clandestine cargo to orbit.

Upgraded X-37B spaceplane rockets into orbit aboard Atlas 5 launcher

May 17, 2020 Stephen Clark

Darting through low clouds, the US Air Force’s reusable X-37B spaceplane rode a United Launch Alliance Atlas 5 rocket into orbit Sunday, debuting upgrades to accommodate additional scientific experiments, a dishwasher-sized tech demo satellite, and classified military objectives.

Starlink ‘train’ traces path across twilight skies

November 14, 2019 Stephen Clark

The 60 Starlink satellites deployed Monday by a SpaceX Falcon 9 rocket have traced paths across twilight skies around the world this week, but their brightness is expected to dim as the spacecraft — designed to beam broadband signals down to Earth — spread out and climb to higher altitudes.