The Humanity Star is a geodesic sphere is made from carbon fibre with 76 highly reflective panels. The sphere spins rapidly, briefly reflecting the sun’s light back to Earth to create a fleeting moment of light.
Humanity Star was a passive satellite designed to produce flares visible from Earth.  Its shape was a geodesic sphere about 1 metre (3 ft) in diameter, similar to a large disco ball . It was launched into polar orbit on an Electron rocket by Rocket Lab in January 2018  and reentered the atmosphere on 22 March 2018.  According to Rocket Lab, it was meant to be "a bright symbol and reminder to all on Earth about our fragile place in the universe".