Why is it so hard to send humans back to the moon?
https://www.space.com/why-is-getting-to-the-moon-so-hard?utm_term=4C6F0460-936C-4BB1-AFC8-763E79682A9A&lrh=b6cf7d1cc5b03d09781df388c8bf94c299849c4284913e9471278585fb3e463f&utm_campaign=58E4DE65-C57F-4CD3-9A5A-609994E2C5A9&utm_medium=email&utm_content=4CB84A10-DDF3-4183-9CFC-8609108923EB&utm_source=SmartBrief