Element 115 is the name commonly used in UFO folklore to refer to moscovium, a synthetic superheavy element with atomic number 115. It draws significant attention because of claims that it plays a central role in alien or advanced technologies. According to scientific records, moscovium (symbol Mc) was first synthesized in 2003 by a collaboration between Russian and American scientists at the Joint Institute for Nuclear Research in Dubna, Russia. It was officially named “moscovium” in 2016.

Its most stable known isotope, moscovium-290, has a half-life of about 0.65 seconds—making it highly radioactive and extremely short-lived. The lore around Element 115 is deeply associated with Bob Lazar, who in 1989 claimed that this element powered alien spacecraft—specifically, providing an energy source capable of warping gravity and sustaining antimatter generators. Lazar’s version describes a stable isotope of Element 115, one that does not decay rapidly and is usable for advanced propulsion. Mainstream scientific discovery later confirmed that an element with atomic number 115 exists, but all known isotopes so far are highly unstable and decay in fractions of a second.

Scientifically, moscovium belongs in the periodic table’s group 15 (the pnictogens), beneath bismuth. It is produced by bombarding americium-243 with calcium-48 ions, a process that generates very few atoms at a time. The known isotopes range from mass numbers 286 to 290. Each of these decays via alpha decay—emitting a helium nucleus—into isotopes of element 113 (nihonium), which themselves continue along decay chains.

There are no known isotopes of moscovium that are stable or have a half-life that would allow for everyday technological use. The gap between the claims and the scientific record is considerable. Lazar asserts that Element 115 can generate gravitational control, produce antimatter efficiently, and serve as fuel for propulsion systems—attributes not supported by current physics or experimentation. According to science, producing even a single atom of moscovium requires powerful particle accelerators; none of the known isotopes live long enough to accumulate or sustain reactions needed for propulsion, let alone gravity manipulation or antimatter production.

Despite the science, Element 115 continues to captivate: its appeal lies in its role at the intersection of advanced science, conspiracy theory, and the hope for technology beyond present limitations. UFO-enthusiasts treat it as a linchpin: if a stable isotope exists (possibly one not yet synthesized), it could validate Lazar’s account. Skeptics argue that even if such an isotope were found, it would demand entirely new physics. In either case, Element 115 remains as much a symbol as a subject—representing the question of what we don’t yet know, and whether myth and empirical discovery might someday converge.