来自MSN4 个月
ULA's new Vulcan Centaur rocket launches on 2nd test flight (video)
United Launch Alliance's (ULA) powerful new Vulcan Centaur rocket is two for two. Vulcan Centaur, the successor to ULA's workhorse Atlas V, launched today (Oct. 4) at 7:25 a.m. EDT (1125 GMT ...
来自MSN1 个月
Uncovering a centaur's tracks: Scientists examine unique asteroid-comet hybrid
Although our solar system is billions of years old, we've only recently become better acquainted with one of its more dynamic and captivating inhabitants known as (2060) Chiron. Chiron belongs to ...