英国大学：用你的电脑毁灭地球

ScienceShot: Destroy Earth From the Comfort of Your Computer

Credit: Information Technology at Purdue image/Michele Rund

Want to demolish Earth? A new Web site allows you to choose the form of the destructor. Just type in a few variables such as diameter, density, and velocity and Impact: Earth! will send a comet or asteroid hurtling toward our planet. Lest you be unsatisfied with a simulation of a massive rock barreling down on us, the Web site also provides data on the aftermath, including the size of the crater, the extent of the fireball, and even the height of the tsunami wave, should the object crash into the ocean. The Web site is an update of an impact calculator created in 2002 for use by NASA and homeland security. The new version is more visual and user-friendly, allowing even average Joes to smash up the planet.

http://news.sciencemag.org/sciencenow/2010/11/scienceshot-destroy-earth-from.html?rss=1

想要毁灭地球吗？普渡大学和伦敦帝国理工学院建立了一个新网站，允许你选择毁灭地球的形式。只要输入一些变量如直径、密度、速度，“Impact: Earth!”将会派一个彗星或小行星撞击地球，你还可以知道身在撞击地点千里之外是否受到影响，了解陨石坑的大小，火球多长，海啸多高。