That contradicts hints from three experiments on earth that pointed to a lightweight dark matter particle weighing just a quarter as much , although some researchers say such featherweights are still in the running .

虽然一些研究者表示这些无足轻重的物质仍在运动，从三项地球实验中得出的矛盾却表明一个轻量暗物质粒子重量大约只有原本估量的四分之一。