US astronauts Bob Behnken, right, and Doug Hurley walk out of the Operations and Checkout Building on their way to the SpaceX Falcon 9 rocket with the Crew Dragon spacecraft on launch pad 39A at the Kennedy Space Centre in Cape Canaveral, Florida, before their aborted space fligh on May 27, 2020. Getty Images
Nasa's first manned mission since the end of the Space Shuttle programme in 2011 was called off 17 minutes before launch because of bad weather and rescheduled for May 30, 2020. AP Photo
Astronaut Douglas Hurley is seen on a monitor in firing room four during suit-up at the Neil A Armstrong Operations and Checkout Building ahead of the planned launch. AFP
Liquid oxygen vents off the Falcon 9 rocket moments before the mission was aborted due to weather problems. AP
Astronauts Doug Hurley, front, and Bob Behnken, sit in the Crew Dragon capsule after the launch was aborted. AP
Doug Hurley, centre, and Bob Behnken confer with technicians after leaving the Crew Dragon capsule. AP
Bob Behnken waves as he and fellow crew member Doug Hurley ride back from Pad 39-A after their mission was delayed by stormy weather. AP
US President Donald Trump helps first lady Melania Trump with her seat while attending a SpaceX mission briefing at the Kennedy Space Centre in Cape Canaveral. Reuters
President Donald Trump looks at a piece of equipment to sign during a tour of Nasa facilities before viewing the SpaceX Demonstration Mission 2 Launch at Kennedy Space Center in Cape Canaveral, Fla. From left, second lady Karen Pence, Vice President Mike Pence, Trump, first lady Melania Trump, Michael Hawes, vice president of Lockheed Martin and Orion Project Manager, NASA Administrator Jim Bridenstine and Kennedy Space Center director Bob Cabana. AP Photo
Stephen Koerner, Director of the Flight Operations Directorate at Nasa’s Johnson Space Centre, left, and Pat Forrester, chief of the US space agency's astronaut office, right, monitor the launch countdown. AFP
Nasa management are seen on a teleconference in firing room four following the attempted launch of a SpaceX Falcon 9 rocket. EPA
Spectators cross Highway 1 in Titusville, Florida as they leave their viewing spots shortly after the launch of SpaceX Falcon 9 was scrubbed. AP Photo