ASTRONOMY

MYSTORY OF BLACK HOLES

The anomalous black holes are concentrated areas of mass so immense, that the mammoth force of gravity denies anything within a certain area around it from passing. This area is called the event horizon of a black hole.

Supernovas are powerful stellar blasts that briefly outshine entire galaxies and radiate more energy than our Sun will in its entire lifetime. Only a star that is between 10 to 25 times more massive than our Sun can become a supernova. After it has burned for 10 to 20 million years or so, the star runs out of fuel and develops a dense iron core about the size of Earth.

The iron core grows until its density becomes so great that it collapses under its own weight. The core contracts, but then almost immediately springs back again. This sudden rebounding action generates a shockwave that speeds outward. Scientists think it is this departing shockwave that triggers the supernova explosion

Earlier this year, astronomers witnessed for the first time the final death throes of an aged and collapsing star as it spewed high-energy light beams into space before exploding as a supernova.

Amazing Space

The Sun

Gallexies

Our Astronauts in the Moon

Astronauts in Space walk