In the video, which has not been verified, the explosion occurs before the SuperDracos actually fire, so the cause of the anomaly isn't clear.
Witnesses reported huge plumes of smoke rising from the test site after the test in Florida at the weekend. That test was scheduled for June, but it's unclear whether SpaceX will still make that deadline. During the test, the crew capsule had suffered an anomaly at the engines.
Dailymail.com has reached out to SpaceX for comment. The same Crew Dragon capsule completed a flawless flight to the International Space Station in March. These are created to safely heave the capsule away from the rocket in the event of an emergency.
NASA said Monday it's too early to revise the target launch dates, given that the accident is still so fresh.
A statement by NASA Administrator Jim Bridenstine confirms the anomaly while noting that the agency and SpaceX are working together to figure out exactly what went wrong.
The University of Southern California's Garrett Reisman, a former NASA astronaut who directed space operations for SpaceX until previous year, said it was a "tough day. not good" for SpaceX. "We will take lessons learned from this test - and our rigorous comprehensive test campaign - to ensure Crew Dragon is one of the safest human spaceflight vehicles ever built".
Until Saturday, SpaceX was on a roll to resume crew launches from Florida.
Although the Demo-1 mission did not have a crew on board, SpaceX did put a sensor-packed test dummy named Ripley inside the capsule to collect data during the flights to and from the space station. The plan was to test the capsule's smaller maneuvering thrusters, then move on to firing the main engine. Few details are being released, but footage of the incident leaked onto Twitter before being deleted.
It also has an Environmental Control and Life Support System (ECLSS) that provides a comfortable and safe environment for crew members. Its astronauts have not launched from Cape Canaveral since the last shuttle flight in 2011.
SpaceX had reportedly planned to use this Dragon capsule for an upcoming in-flight abort test that requires the Dragon to escape from its Falcon 9 booster at the point of peak aerodynamic stress.
What makes the event more challenging for NASA is that its other commercial crew capsule provider, Boeing, is having its own problems. Those efforts were expected to culminate this year with crewed flights - the first from the US since the end of the space shuttle program in 2011. The engines, which are created to push the crew capsule out and away from the rest of the launch vehicle if something goes wrong, suffered an "anomaly", according to NASA. The supply ship is set to blast off from Cape Canaveral on April 30.
The Los Angeles Times reports that the vehicle in question was indeed the same one that docked with the International Space Station just a number of weeks ago.