Q&A with Keith Gendreau, principal investigator of the first X-ray space communications experiment (members only)

Relive the steps to stack the United Launch Alliance Atlas 5 rocket at Cape Canaveral’s Vertical Integration Facility for the Orbital ATK Cygnus cargo freighter for the space station. The first stage was erected initially, followed by the interstage and Centaur stage, then the encapsulated payload.

SpaceX’s launch of the Starlink 6-56 mission will move the company past the total number of Space Shuttle Program missions from Launch Complex 39A. Liftoff is set for 2:42 p.m. EDT (1842 UTC).

The second flight of NASA’s Ingenuity helicopter in the Martian atmosphere Thursday took the rotorcraft higher than its first hop. A third takeoff as soon as Sunday will take the helicopter more than 150 feet away from its makeshift airfield as engineers attempt more daring test flights.