Most are from Earth but one is also from Mars.
As the world remembered the events of 9/11 on its 21st anniversary, NASA also took a pause to look back at the events of that day and its efforts to commemorate the lives lost., the space agency shared images and stories of how it was involved on and after 9/11.
In a series of coordinated attacks, four commercial airplanes were hijacked by terrorists on the morning of September 11, 2001. Two of these planes were flown deliberately into the Twin Towers of the World Trade Tower Complex in New York City. The resultant fire weakened the steel structures of the buildings, which ultimately led to their collapse. 2,753 people died that day.
NASA also flew 6000 U.S. flags, each 4x6 inches onboard the STS-108 that flew on the Endeavour Space Shuttle. Upon their return to Earth, these flags were distributed to the families of theSTS-108 astronauts Mark Kelly, left, and Dan Tani hold commemorative American flags the shuttle Endeavour in December 2001.Honeybee Robotics is a spacecraft technology company that was building tools to grind weathered rinds off rocks on Mars.
Even as the lives of people in the city came to a grinding halt, the employees needed to continue working on their tools so that they could be sent along the Spirit andThe team, on a tight schedule to deliver its tools to allow sufficient time for testing before the launch, could not help others as the city tried to find its feet.
This view of an American flag on metal recovered from the site of the World Trade Center towers shortly after their destruction on Sept. 11, 2001, was taken on Mars on Sept. 11, 2011, the 10th anniversary of the attacks on the towers.The rovers might go silent on the Red planet, but the memories of 9/11 will remain for millions of years to come, the NASA webpage said.