It could be the largest lunar impact event in 5,000 years.If it hits in December 2032, asteroid 2024 YR4 — believed to be 60 metres in diameter — may release the energy equivalent of six million ...

There is this saying that the more you know about something, the more likely you are to grow concerned about some aspect of it. The validity of this saying became painfully clear when reading this ...

Scientists have issued a chilling update on the 'city-killer' asteroid heading towards the moon. Asteroid 2024 YR4, a 220-foot (67m) 'city-killer', currently has a four per cent chance of hitting the ...

Abstract: Sparse matrix reordering is an important step in Cholesky decomposition. By reordering the rows and columns of the matrix, the time of computation and storage cost can be greatly reduced.

During the Civil War, both sides used firing squads to kill deserting soldiers. Today, people on death row can choose to die that way in some states. By Jacey Fortin On Friday, for the second time in ...

Abstract: In this article, we propose a new time-domain method for solving Maxwell’s equations: patch-based matrix-free time-domain (P-MFTD) method, in unstructured 3-D meshes. This method is free of ...