Super-heavy element also known as HU-2340. A small jar of the element took Dr. MacLaren, its creator, five years to create. The jar was strapped to a M.A.L.P. and sent through to the Asgard-protected planet K'Tau. En route it passed directly through K'Tau's star with the intentions to use the material to repair the interstellar body following a dramatic shift to infrared.
It is unclear if the HU-2340 saved K'Tau, or the Asgard, or both.
Red Sky - Dr. Maclaren arrives at the S.G.C. to bid farewell to his HU-2340 in hopes that it will save the people of K'Tau from certain death.