Russia's Soyuz MS-23 spacecraft blasted off on a mission to rescue two cosmonauts and a Nasa astronaut stranded at the International Space Station after a leak in the cooling system of their capsule.
The unmanned craft lifted off from Baikonur space centre in Kazakhstan and had been placed in orbit, Russian news agency Tass reported.
The Soyuz capsule was expected to dock with the ISS early on Sunday.
Russian cosmonauts Sergey Prokopyev and Dmitry Petelin and US astronaut Francisco Rubio were left stranded in space after the cooling system of their Soyuz MS-22 capsule started leaking two months ago.
They had been due to end their mission in March.
The leak in December was reportedly caused by a tiny micrometeorite space rock that punctured an external radiator.
A similar impact is believed to have caused a leak on the cooling system of the Progress MS-21 cargo ship earlier this month.
The damaged Soyuz will return to Earth with no one aboard by the end of March, so engineers can examine it.
The three men launched in this Soyuz in September on what should have been a six-month mission.
They will now stay in space for a full year until a new capsule is ready for their crew replacements in September.
Tass said 430kg of cargo was sent aboard the replacement craft, including medical equipment, scientific instruments, water, food and cleaning supplies — three times the amount normally dispatched for such missions, according to a Russian space official.
The damaged supply ship was filled with rubbish and cut loose at the weekend, burning up in the atmosphere.
Name: Peter Dicce
Title: Assistant dean of students and director of athletics
Favourite sport: soccer
Favourite team: Bayern Munich
Favourite player: Franz Beckenbauer
Favourite activity in Abu Dhabi: scuba diving in the Northern Emirates
How green is the expo nursery?
Some 400,000 shrubs and 13,000 trees in the on-site nursery
An additional 450,000 shrubs and 4,000 trees to be delivered in the months leading up to the expo
Ghaf, date palm, acacia arabica, acacia tortilis, vitex or sage, techoma and the salvadora are just some heat tolerant native plants in the nursery
Approximately 340 species of shrubs and trees selected for diverse landscape
The nursery team works exclusively with organic fertilisers and pesticides
All shrubs and trees supplied by Dubai Municipality
Most sourced from farms, nurseries across the country
Plants and trees are re-potted when they arrive at nursery to give them room to grow
Some mature trees are in open areas or planted within the expo site
Green waste is recycled as compost
Treated sewage effluent supplied by Dubai Municipality is used to meet the majority of the nursery’s irrigation needs
Construction workforce peaked at 40,000 workers
About 65,000 people have signed up to volunteer
Main themes of expo is ‘Connecting Minds, Creating the Future’ and three subthemes of opportunity, mobility and sustainability.
Expo 2020 Dubai to open in October 2020 and run for six months
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