A black hole is a cosmic body of extremely intense gravity from which even light cannot escape. Black holes usually cannot be observed directly, bu...

The singularity constitutes the center of a black hole, hidden by the object’s “surface,” the event horizon. Inside the event horizon, the escape v...

A black hole can be formed by the death of a massive star. At the end of a massive star's life, the core becomes unstable and collapses in upon its...

One example of a black hole is can be found in Cygnus X-1, a binary X-ray system consisting of a blue supergiant and an invisible companion 14.8 ti...

Black History Month, also called African American History Month, is a monthlong celebration of African American history and achievement. It takes p...

Black History Month is celebrated every year during the month of February in the United States.

Black History Month was first celebrated in 1976. The idea was developed by historian Carter G. Woodson and a group of fellow scholars, who togethe...

Black History Month takes place in February because February is the birth month of President Abraham Lincoln (born February 12, 1809) and abolition...

Black History Month is celebrated with events at public schools, universities, and museums and in individual communities that honour the achievemen...