Launch into outer space with Nasa astronauts on a voyage across the Solar System. From quick trips to new colonies on the moon, to expeditions to Mars and beyond, the solar system challenges humans to the explore of the brink of discovery.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzes reviews to verify trustworthiness.