parts of Africa, the Arabian Sea and South Asia. North America was not among the possible impact locations. The chance is so low that astronomers are not yet concerned about YR4. Still, space ...

China has forged nearly two-dozen pacts with African nations in its bid to surpass the U.S. in space. Investments in satellites and infrastructure are winning friends – and giving China more eyes on ...

The X-15 is the only conventional aircraft that has ever been flown above the “Karman Line” separating the Earth’s atmosphere from space ... flight aboard the North American X-15.