NASA proposes cost-effective plan to return Mars samples by 2030, offering two options under $7 billion.

NASA is pitching a cheaper and quicker way of getting rocks and soil back from Mars.

NASA is pitching a cheaper and quicker way of getting rocks and soil back from Mars, after seeing its original plan swell to $11 billion.

NASA last year asked industry and others to come up with better options to ensure the samples arrive on Earth in the 2030s.