Wednesday, 9 January 2013
Monday, 31 December 2012
Sunday, 30 December 2012
Title: Birth of a Black Hole
The video clip is about how black holes are formed and when the gamma rays from the black holes were first spotted on Earth by spy satellites in 1960s. It actually took 30 years for scientists to find out what they were. Black Holes are celestial bodies with such an intense pull that nothing can escape from it. There are actually many theories to how Black holes are formed. The most common theory is where a star of mass 3 times the Sun's reaches the end of its life, gets crushes under its own gravity, leaving behind a compact black hole.
These are the few points that I have learnt:
- How long it takes for a gigantic star to use up all its nuclear energy.
- What is a black hole
- What a star gives out when it explodes into a black hole