A crew of two Russian cosmonauts and an American astronaut blasted off Tuesday from Kazakhstan on a Russian Soyuz rocket for the International Space Station, with US-Russia space cooperation continuing amicably, despite the diplomatic standoff over Ukraine.
Russians Alexander Skvortsov and Oleg Artemyev along with Steve Swanson of NASA took off in a spectacular night-time launch at the start of a fast-track six-hour journey to the orbiting laboratory, where they will spend half a year.
All the stages of the launch went without a hitch and the Soyuz capsule successfully went into the correct orbit.
Docking with the ISS was expected at 03:04 GMT Wednesday but this has been delayed until 07:58 Thursday.
After the retirement of the US shuttle, NASA is for now wholly reliant on Russia for delivering astronauts to the space station on its tried-and-trusted Soyuz launch and capsule system.
Space officials have made clear that space cooperation, one of the few areas of genuine mutual work between Russia and the United States, will continue unaffected by the mounting diplomatic strains that have seen the US impose sanctions on Russian officials over Moscow's seizure of Crimea.
A yellow toy duck nicknamed "quack" given to Swanson by his daughter hung in the cockpit and started floating a few minutes into launch as the crew started to experience weightlessness.
-'We'll live together peacefully'-
Arrival Delayed The next trio of crew members destined for the International Space Station is now looking forward to a Thursday arrival at the orbiting laboratory after their Soyuz spacecraft was unable to complete its third thruster burn to fine-tune its approach. Flight controllers in the Mission Control Center outside Moscow are now reverting to a backup 34-orbit rendezvous, which would result in an arrival and docking at 7:58 p.m. EDT Thursday, March 27.
An unmanned Russian carrier rocket exploded Tuesday on takeoff at the Baikonur cosmodrome in Kazakhstan, releasing tonnes of highly toxic fuel into the air in the space programme's latest disaster caught on live television.
Spectacular footage showed the Proton-M rocket veering off its trajectory just seconds after its 6:38 am (0238 GMT) launch, before falling apart in mid-air, erupting into a ball of flames and unleashing clouds of noxious black smoke.
"It seems something is going wrong," said a Russian television commentator during the live coverage of the launch at the Baikonur cosmodrome in the Central Asian state of Kazakhstan.
"Something is wrong. It seems it will be a catastrophe," said the presenter, his voice trembling, shortly before the rocket exploded.
President Vladimir Putin had been informed of the accident, the Kremlin said in a statement.
The rocket, which fell back into the area of the Baikonur cosmodrome which Russia leases from ex-Soviet Kazakhstan, was supposed to take three Russian Glonass-M navigation satellites into space.
The rocket carried 600 tonnes of kerosene, heptyl and amyl which are highly poisonous components of rocket fuel, said the head of the Kazakh space agency, Talgat Musabayev.
The Russian space agency Roskosmos, citing preliminary information, said the accident caused no damage or casualties but the crash site was immediately cordoned off and residents of nearby towns including Baikonur were told to stay indoors and keep their windows shut.
Heptyl is a highly poisonous component of rocket fuel and is known to be more toxic than the chemical weapon sarin.
Kazakh officials played down the immediate danger to people, saying a lot of the fuel had burned in the air but some experts suggested the fumes may find their way into drinking water.
Locals said the explosion sounded like thunder and that they were not unduly concerned about their safety.
"They asked us to stay indoors and not to open windows," said Mukhtar Umurzakov, a 46-year-old driver, who lives in the town of Kyzyl-Orda some 300 kilometres (185 miles) from Baikonur.
"They also said you cannot release cattle out to pasture but no one paid attention," he told AFP.
Officials in Kazakhstan said earlier Tuesday that a cloud of fumes that had formed over the cosmodrome could move beyond the area.
Head of the emergencies ministry in Kazakhstan, Vladimir Bozhko, was quoted as saying that early indications showed the accident was caused by a malfunction of a first-stage engine.
Experts say the disaster is a major blow to the reputation of the reliable Proton-M rocket.
"Proton is our main workhorse for commercial use," space analyst Vadim Lukashevich told AFP. "Businessmen will now start thinking whether they should look for another carrier."
He added that Russia would likely come under more pressure from Kazakhstan to increase rental payments for the cosmodrome.
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