Wed, 04 Jan 7.30pm
These leftover fragments from the solar system's creation have long inspired fear and awe. Today, these icy giants offer a unique view into how the planets formed and how life as we know it began.
Wed, 11 Jan 7.30pm
Are there aliens in our galaxy? Some reputable scientists think so. Visit the seven places they think alien life may lurk. See what these life-forms might look like and how they would survive.
Never miss a Nat Geo moment
Join our curious community and you'll have access to some great features!
Personalised content reflecting your interests on the site
Watch exclusive videos before anyone else
Favourite content that you like or want to check out later
Free SMS and Email reminders so you never miss a show
Get notified when content that interests you is published
Share your photos on Snap! that could appear on TV
Share your thoughts and opinions on various matters
Receive a monthly newsletter with loads of great content