EDISON - People across the world are remembering the lives lost in the Challenger disaster 30 years ago. 

Thursday marks the 30th anniversary of the Challenger space shuttle disaster. The crew members of the Challenger were killed when the shuttle exploded shortly after takeoff.

The families of those lost gathered Thursday at NASA as part of its Day of Remembrance.

The crew of the International Space Station held a moment of silence to remember the lives lost in the quest for space exploration. Astronaut and West Orange native Scott Kelly is spending a year in space aboard the space station. After the moment of silence, he said he wanted to “recognize the sacrifice of all those crew members and how their spirit and their legacy lives on in our achievement in space."

Montclair native Buzz Aldrin sent out a tweet about the anniversary that said, "Remembering the crews today that we've lost, especially my best friend Ed White who perished in the Apollo 1 fire." Aldrin was the second person to walk on the moon.

In New Jersey, the Buehler Challenger & Science Center in Paramus held a special event in honor of the anniversary. Students from Franklin Lakes first designed lunar landers, then tested them and took part in a simulator that was designed by the families of the Challenger crew.

Seven crew members, including teacher Christa McAuliffe, died when the shuttle exploded in 1986.