Arianespace launches mission VS18 from the Guiana Space Centre, a Soyuz rocket carrying a payload of four O3b communications satellites for SES.
Arianespace successfully launches the European Space Agency's CHEOPS space telescope from Guiana Space Centre. The European observatory will search for new exoplanets and will be able to study an exoplanet's composition and internal structure. The launch also included OPS-SAT, an ESA CubeSat.
Arianespace launches the European Space Agency–Japan Aerospace Exploration Agency probe "BepiColombo" from Guiana Space Centre as it begins a 7-year journey to Mercury. It is the final mission of the Horizon 2000+ program.
Rocket Lab successfully launches test rocket Electron into orbit from Mahia Peninsula, New Zealand, becoming the first rocket to reach orbit using an electric-pump-fed engine, after the original rocket launch in May 2017 had to be aborted by safety officials.
The Indian Space Research Organisation successfully launches India’s 100th satellite and 30 other satellites from the Satish Dhawan Space Centre in Sriharikota, Andhra Pradesh. [http:--www.thehindubusinessline.com-news-science-isro-launches-its-100th-satellite-into-space-article10027585.ece "(The Hindu)"]