Countdown begins for comet impact
After a voyage of 173 days and 431 million km, Nasa's Deep Impact spacecraft will get up-close and personal with comet Tempel 1 on July 4. The first of its kind, hyper-spped impact between space
After a voyage of 173 days and 431 million km, Nasa's Deep Impact spacecraft will get up-close and personal with comet Tempel 1 on July 4. The first of its kind, hyper-spped impact between space