The observations and studies of the OH megamasers associated with AGN and starburst galaxies are the very efficient tools to investigate characteristics of their central sources an.
对河外星系OH超脉泽的观测和研究,是探测和研究其所成协的活动星系核、星暴星系的中央源和拱核盘的有效工具。
Some prediction of the Leonid storm in 1998;
1998年狮子座流星暴的一些预测