The astronauts were to dock at the International Space Station six hours after the launch, but the Soyuz booster suffered an unspecified failure and shut down minutes after the launch.
Even if the Soyuz spacecraft is cleared for launch before December, Hadfield said, it could end up carrying astronauts from Thursday's launch rather than the next scheduled crew.
Rescue crews then raced to the scene to retrieve them with reports of paratroopers parachuting to their landing spot. We await further word from the search and rescue team.
The crew returned to Earth in "ballistic descent mode", which is a sharper angle of landing compared to normal and during which they would have experienced high G forces.
Rescue crews are now heading towards the emergency landing site in the barren Kazakh steppe to provide support for the crew.
NASA released a statement after a Russian booster rocket on a mission to the International Space Station failed after launch. "But everything seems to be fine with the crew, we had good comms with them and they are OK".
Trump, Kim considering four locations for next summit
Pompeo echoed Trump's comments when he spoke briefly to reporters during a Tuesday afternoon visit to the White House. On Tuesday, Trump said that he was planning a second summit with Kim for the near future. "That's a two-way street".
The failure is a setback for the Russian space programme and the latest in a string of mishaps.
The three astronauts now on board the space station have been informed of the failed launch and their schedule for the day is being reshuffled, since they'll no longer be able to greet the incoming duo.
Kremlin spokesman Dmitry Peskov said he expected Russian President Vladimir Putin would be briefed on the incident.
The mission was supposed to be Hague's first trip into space, and Ovchinin's second six-month stay at the station.
If Soyuz launches are suspended for an extended period, one of the potential options would be to let the current crew return as planned and leave the station temporarily uncrewed.