NASA astronaut Jessica Meir and ESA astronaut Luca Parmitano will perform a spacewalk on the International Space Station to replace batteries on the station’s port truss. The existing nickel-hydrogen batteries will be upgraded with newer, more powerful lithium-ion batteries.

NASA astronauts will conduct a spacewalk to replace batteries on the International Space Station's port truss. The existing nickel-hydrogen batteries will be upgraded with newer, more powerful lithium-ion batteries.

JAXA's HTV-8 cargo resupply vehicle will be released from the International Space Station by the robotic Canadarm2. Following the release, the spacecraft will deorbit and burn up in Earth's atmosphere.

The Cygnus NG-12 cargo vehicle will be captured by the robotic Candaram-2 on the International Space Station.

Boeing's CST-100 Starliner capsule will perform a pad abort test as part of NASA's Commercial Crew program.

Russian cosmonauts Oleg Skripochka and Aleksandr Skvortsov will perform a spacewalk on the International Space Station.

The core stage for NASA's first SLS rocket will perform a Green Run hotfire test on the B-2 test stand at NASA Stennis

Callisto is a prototype vehicle for a reusable rocket being developed by CNES, DLR, and JAXA. It will take off from the Kourou base in French Guiana for a suborbital flight, before returning to land next to the launch pad.

OSIRIS-REx will move into position to collect a sample of asteroid Bennu's surface material. The spacecraft's sampling arm will then touch the surface for five seconds as part of the Touch-And-Go (TAG) sampling maneuver.

After collecting several samples of the asteroid Ryugu, and after dropping several objects on its surface, Hayabusa-2 will leave Ryugu in December 2019 to bring back the samples it has collected on the asteroid. The capsule containing them should land in the Australian desert just like the Hayabusa-1 mission.

NASA's Mars 2020 Mars rover will land at Jezero crater on Mars. The mission will seek signs of habitable conditions on Mars in the ancient past, and will also search for evidence—or biosignatures—of past microbial life.

ExoMars is a Martian rover of the European Space Agency that will land in the region of Oxia Planum. The rover will investigate the local geology and search for signs of past and present life.

The OSIRIS-REx spacecraft will return a sample of the asteroid Bennu to Earth. The sample will land via parachute in the Utah desert.