NASA honored its fallen space explorers during its annual "Day of Remembrance" on Thursday (Jan. 23). The agency held events ...

An annual memorial was held at the Kennedy Space Center Visitor Complex. Every fourth Thursday in January, NASA remembers fallen astronauts.

We've come years in our journey to explore the unknown, but none of that would be possible without those who made the ultimate sacrifice towards the exploration.

New Hampshire teacher Christa McAuliffe and other astronauts were honored Thursday by NASA during its Day of Remembrance.

We’ve come years in our journey to explore the unknown, but none of that would be possible without those who made the ultimate sacrifice towards the exploration.

New Hampshire teacher Christa McAuliffe and other astronauts were honored Thursday by NASA during its Day of Remembrance.

Today is a very special, and somber day for North Alabama. It's NASA Marshall Space Flight Center's Day of Remembrance.

The commemorative plaque was left on the moon back in 1971, during Apollo 15, in memory of 14 NASA astronauts and USSR ...

The Apollo I and space shuttle Challenger and Columbia astronauts were remembered during an annual ceremony at Kennedy Space Center.

Little Kid Girl Astronaut Launching Toy Rocket From Spaceport Through ... having fun while splashing water at the pool in the backyard. Small girl playing with fallen leaves in public park A small ...

Donald Trump has pledged in his inaugural address to pursue a policy that "expands our territory" and puts US astronauts on Mars. Trump said he "will pursue our manifest destiny into the stars ...