Leigh Fletcher interview: Why we urgently need a mission to Neptune

To understand the secrets of the most common type of planet in our galaxy, we need to explore ice giants Neptune and Uranus. But we must act now or wait decades for another launch window, says planetary scientist Leigh Fletcher

Leigh Fletcher interview: Why we urgently need a mission to Neptune
To understand the secrets of the most common type of planet in our galaxy, we need to explore ice giants Neptune and Uranus. But we must act now or wait decades for another launch window, says planetary scientist Leigh Fletcher