NASA astronauts Bob Behnken and Chris Cassidy will perform a spacewalk to upgrade batteries on the International Space Station.

NASA astronauts Bob Behnken and Chris Cassidy will perform a spacewalk to upgrade batteries on the International Space Station.

The Progress MS-15 cargo resupply vehicle will dock with the Pirs module on the International Space Station.

Following an extended stay at the International Space Station, Crew Dragon Endeavour will undock from the Harmony IDA-2 with NASA astronauts Bob Behnken and Doug Hurley. Dragon will then deorbit and splashdown in the Atlantic Ocean.

Crew Dragon will splashdown in the Atlantic Ocean with NASA astronauts Bob Behnken and Doug Hurley – completing the Demo-2 mission. Demo-2 is a crewed test flight of SpaceX's Crew Dragon spacecraft to certify it for operational crew rotation missions.

The HTV-9 cargo resupply vehicle will be released by the robotic Canadarm2 on the International Space Station. Following the release, HTV will deorbit and burn up in Earth's atmosphere.

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.

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.

Two cosmonauts will perform a spacewalk on the International Space Station.

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 Perseverance 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.

The Chinese Martian lander Huoxing-1 will land at Chryse Planitia on Mars. It will become the first Chinese object on Mars. The HX-1 lander also contains a small rover. (Image credit: Xinhua)

Russia will remove the Pirs module from the International Space Station to free the location for the future Nauka module. The undocking will be performed by a Progress cargo craft. The two vehicles will then be deorbited – burning up in Earth's atmosphere.

The new Russian Nauka module will allow Russia to have an additional scientific module aboard the International Space Station. Nauka will dock at the port of the old Pirs module.

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

Thémis is a reusable launcher demonstrator developed by CNES and ESA. It must liftoff from Kourou with three methane-powered Prometheus engines, and return to land on a recovery barge.

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.