Kuiper Time.

Landing on Sedna as it known '2003 vb12' in Kuiper Belt could some of this Leonardo work be used to transport valued rare space mine materials by robots using mixture of compounds to build space station 'Earth Port' as sending one probe also act as a beacon streaming with Earth its 'easy right' Guys we ll try. Where did ye all go,  Art View spent ages looking for you.
Here is a weapon of war it is triple barrel cannon designed by Leonardo Da Vinci, It was found in a 15th century fort in Croatia. Da Vinci was famous for his weapons of war which were hugely in demand among the rival factions in the northern Italian cities. He was the first to invent a breech-loading machine gun with several cannons in rotation which meant soldiers could be firing one, loading another and cooling the third. The triple-barrel cannon, apparently one of his less successful designs, had been dumped in the Klicevica border fortress near the southern town of Benkovac.
A group of schoolchildren discovered it and told museum officials in the town - but its 15th century origin remained a mystery until today.  The original Da Vinci designs are regarded as forerunners for the modern machine gun. Until now the only Da Vinci cannons on display in Italy have been replicas. Leonardo was the first to measure the penetrating power of a missile, and to ascertain how to vary it by changing the attitude. Leonardo also wanted to have more effective projectiles.  In attempting to do this he designed shells filled with gunpowder which exploded upon impact. Others contained projectiles which would scatter over the area. One design saw a large ball split into two pieces as it left the mortar. This sent smaller balls in all directions and they, in turn, exploded upon contact.

When an ancient three-barreled cannon was discovered by schoolchildren, museum officials would have known they had stumbled on a rare find. But now, 40 years after the discovery of the unique weapon, they have learned just how important it is - the gun is a prototype designed by Leonardo Da Vinci himself.

The cannon was discovered in a Croatian fort, but only now has it been confirmed it was designed more than 500 years ago by the artist and inventor. Invention the multi-barrelled machine gun was a weapon with remarkable firepower. Da Vinci sketched this rolling artillery battery around 1480.

A spokesman for the Benkovac museum said: 'We have only recently confirmed the age of our cannon and that it was one designed by Da Vinci. 'As far as we know this is the only original cannon designed by [him] left in the world.' The Da Vinci bronze triple barrel canon will now be exhibited in in Benkovac. The archaeologists believe it was probably brought to the Croatian area of Dalmatia from Venice as Venetians ruled the area at that time and fought Turks for control. A typical cannon of Da Vinci's age was cast iron or bronze, had a short barrel, a short range and fired cannonballs which fitted very approximately. The first thing he did was to design breech-loading cannons as against muzzle-loading.They required a fast means of being cooled before another firing and he calculated that a vat of water would do the trick. 

 During these tests he even managed to launch a rocket-powered cannon-ball 10,000 feet into the air.

The steam cannon was another experiment. To be manufactured from copper, the breech of the canon would be built into a brazier of burning coals which would heat it to very high temperatures. Following this, a small amount of water would be injected just behind the iron ball.

When the water turned to steam it would drive the ball out under pressure.  Given that Da Vinci even quoted how large a cannonball this weapon could fire, and how far it would travel, it is quite feasible that it was actually built and test-fired. He wanted to increase the rate of firing weapons and so designed machines with multiple cannons, so they could be fired successively or all together. Two of these used racks of eleven or fourteen guns.

While the top row was being fired the next rack was loaded; at the same time, a third rack was cooling off. Leonardo da Vinci's de' Benci, this is a painting of a young Florentine lady, it is the Renaissance master only painting on permanent display in the United States. It was purchased by the national gallery in 1967 for the staggering amount $5 million it was a record price for an artwork for its time.