单词：cowperthwaite
单词：cowperthwaite 相关文章
Scientists Observe Birth of Huge Galaxy Cluster For the first time ever, astronomers have observed the birth of a galaxy cluster, known as a protocluster. The event, billions of light-years away, could form one of the largest-known structures in toda
2018年VOA慢速英语(五)月
International Performers Flock to Texas Music Festival Playing on Austin's club-lined Sixth Street, the British folk group Skinny Lister charms the crowd. It cost them a lot of money to come here two years in a row but group guitarist Daniel says it
VOA标准英语2013年(三月)
This is Scientific Americans 60-Second Science. I am Christopher itagliata. Got a minute? How heavy is the Milky Way in comparison to its neighbor galaxy, Andromeda? Well, depends how you calculate it. In 2006 one group of astronomers figured the Mil
2014年Scientific American(八)月
How heavy is the Milky Way in comparison to its neighbor galaxy, Andromeda? Well, depends how you calculate it. In 2006 one group of astronomers figured the Milky Way was twice as massive as Andromeda. A 2009 estimate evened the score, calculating th
2014年Scientific American(八)月
How heavy is the Milky Way in comparison to its neighbor galaxy, Andromeda? Well, depends how you calculate it. In 2006 one group of astronomers figured the Milky Way was twice as massive as Andromeda. A 2009 estimate evened the score, calculating th
2014年Scientific American(八)月