What will happen if the asteroid is on a collision course? If the asteroid is bigger than 50 metres, the ESA will debate sending a space mission to intercept it, according to Cano. "We have two ...

Stocks: Real-time U.S. stock quotes reflect trades reported through Nasdaq only; comprehensive quotes and volume reflect trading in all markets and are delayed at least 15 minutes. International ...

Abstract: Problems involving the classical linear partial differential equations of mathematical physics can be reduced to algebraic ones of a very much simpler structure by replacing the ...