http://www.livescience.com/57432-stronger-than-steel-material.html
This object is made from Graphene (https://en.wikipedia.org/wiki/Graphene) and and the object is almost completely hollow, its strength comes from how the atoms are aligned.
The configuration of them gives the overall structure enhanced strength beyond the graphene itself,which is already 200x stronger than the strongest steel.
www.bbc.co.uk/news/world-australia-38804802
Quote
Australian scientists have turned ordinary cooking oil into graphene, in a discovery they say lowers its cost to produce.
This material is cheap, super light, super dense, super durable, super conductive and mitigates heat and cold very effectively.
+http://www.livescience.com/57645-elusive-metallic-hydrogen-created.html?utm_source=notificationQuote
Scientists have just found a way to make metallic solid hydrogen in the lab, by compressing it at ultrahigh pressure between two diamond anvils.
[/spoiler]
Quote
Metallic hydrogen, a bizarre form of the element that conducts electricity even at low temperatures, has finally been made in the lab, 80 years after physicists predicted its existence.
Quote (Isaac Silvera)
"No one has ever encountered metallic hydrogen because it's never existed on Earth before, probably the conditions in the universe are such that it has never existed in the universe."
= Space ship.
I predict within a decade or so, assuming the private sector keeping pushing forward the way it is now, we will be able to traverse to the moons of Jupter and Saturn, and have dozens of earths worth of water and precious metals.
Soy beans are dirt cheap, and hydrogen is friggen everywhere. We just need to build it, and then rest will follow.