Can NASA Really Land Astronauts on the Moon by 2028?

Experts have been hopeful, but say the agency’s lunar aspirations are largely at the whims of two billionaires, Elon Musk and Jeff Bezos.An artist’s concept released by Blue Origin of its large, crew-carrying Mark 2 moon lander. Neither Blue Origin nor SpaceX, contracted by NASA, have completed development of a lunar lander.