这个红矮星系统确实让科学家们兴奋了一把，因为他们在里面发现了好多超级地球，比如581g和格利泽581d。581d距离恒星第三近，和地球一样 ...

This advertisement has not loaded yet, but your article continues below. Police exchanged gunfire with the man, which left him and an officer wounded Samples are on their way to Winnipeg's ...