Live coverage: Vega rocket launches with LISA Pathfinder

After a four-day delay due to a ground power supply anomaly and unfavorable weather, an Ariane 5 rocket lifted off at 4:23 p.m. EST (2123 GMT) Tuesday to send into orbit a hush-hush communications satellite for the Egyptian military and a spacecraft to expand the capacity of Inmarsat’s mobile Internet service.

The next pair of spacecraft to join Europe’s Galileo navigation system are positioned for liftoff late Thursday aboard a Soyuz rocket. These photos chronicle the preparation of the satellites for launch at the Guiana Space Center.

Wrapping up a two-day pursuit since launching from Cape Canaveral, a SpaceX Dragon supply ship arrived at the International Space Station Monday with more than two tons of cargo and experiments. The automated cargo freighter was captured by the station’s robotic arm at 6:25 a.m. EDT (1025 GMT).