In the good old days, exploration of space was especially expensive and ineffective. A single launch costs many dollars too, and the rocket only flies once. But now many of the companies have started 3D printing of Rockets so that they land safely.
In the good old days, exploration of space was especially expensive and ineffective. A single launch costs many dollars too, and the rocket only flies once. But now many of the companies have started 3D printing of Rockets so that they land safely.