Video: Zoomed in view of ignition of Falcon 9 engines in prelaunch test (members only)

NASA re-established contact with a wayward sun-watching science satellite Sunday nearly two years after the spacecraft suddenly dropped off line during a test, the agency said in a statement Monday.

Four more satellites for SES Networks’ O3b broadband fleet launched Thursday aboard a Soyuz rocket. Liftoff of the Soyuz launcher from the Guiana Space Center in South America occurred at 1703 GMT (1:03 p.m. EDT).

Virgin Galactic will conduct the remaining test flights for the company’s SpaceShipTwo suborbital rocket plane from southern New Mexico after moving staff and equipment from California over the next few months, officials announced Friday.