The U.S. military is developing a new experimental aircraft known as the X-68A and looks a lot like a cruise missile that is also capable of launching its own missiles.
Giant mpacts on Earth's surface can be cataclysmic events with far-reaching consequences. They can excavate massive craters like the Vredefort Crater. There's also growing evidence that impacts powerful enough can create a massive underground hydrothermal system of cracks and chemistry that could be conducive to life.

