Empire of Netheril enters Wildspace

Technological achievement

Year 1164 DR in the local Harptos calendar.
  The Empire of Netheril on Faerun becomes the first human spelljamming nation of Toril. The Skyward Realms, as the space mariners of Netheril called Realmspace, was believed to be the next great frontier for raw materials, such as mined ores, spellcraft, and "discovered" magical items. The Netherese explorers, however, were also responsible for racial "experiments," basically vivisecting anything they ran across. This gave the Netherese, the only Faerunian humans to have ventured into Realmspace up until 2618, a very bad name and a horrid reputation-akin to the fear generated when an illithid spelljamming ship was seen. This dread did nothing but separate the Netherese from the spelljamming community already in space and made trade nearly impossible. In fact, Netherese ships were attacked on sight. Oberon, an arcanist born during this time in Netheril's history, tried his best to mend his nation's reputation in space, but it was to no avail. One hundred years after the first ship ventured above Toril's surface, Netheril recalled the last one. The tremendous expense of armoring and defending their ships far exceeded any profits to be made in Realmspace. Since the Netherese were unsuccessful in creating their own helms and other spelljamming items-being forced to rely on the Arcane for such materials- they decided to drop out of Realmspace. Oberon, distraught over the loss of his love, moved to Yeoman's Loft and attempted to maintain a presence in Realmspace. Even his death 10 years later didn't hamper Netheril's presence, as others who felt and shared his dedication continued in his wake.

Less than 50 years later the Netherese abandon Spelljamming technology due to constant conflict with the Imperial Elven Navy.