“发现者号”航天飞机将在空间进行6次微重力实验,这是从“挑战者号”航天飞机在 1986年1月的爆炸使此类试验停止以来的首次。研究人员将在航天飞机上从事晶体生长和蛋白质分离的实验。其中一项实验是宇航员将一种蛋白质溶液小心地从注射器中挤压出,让一滴溶液悬浮在注射针的针尖上保持平衡。科学家们希望这滴溶液将会形成一个其分子具有完 The Discovery space shuttle will perform six microgravity experiments in space for the first time since the “Spaceman Challenger” space shuttle shut down in January 1986. Researchers will be engaged in experiments on crystal growth and protein separation on the space shuttle. In one of these experiments, astronauts carefully squeezed a protein solution out of the syringe and allowed a single drop of solution to float on the needle tip to balance. Scientists hope this drop of solution will form a molecule whose ends are finished