Getting back on the topic of my OP, it seems I wasn't far out with what I said.

Dr Jerome Chappellaz, part of a NASA team who drilled down through 3 kilometres of Antarctic ice when speaking about Ice Ages predicted that within 40,000 to 60,000 years an Ice Age will return and said that :-

"Our distant cousins – Saturn and Jupiter – are responsible. 

These two planets are so big that their mass periodically deforms the Earth’s orbit, making it more elliptic. 

Since the sun is further away, the energy we receive from it lessens.

The Earth’s orbit around the sun causes the quantity of the energy received at the surface of the planet to change with time.

If we take winter snowfall at out latitudes, there needs to be enough energy during the summer to make it melt but, if it is not strong enough, the snow will stay and form a glacier over summer.”

It seems obvious then that the converse must also be true. If we get closer (to the sun) it'll get hotter?