As-Salāmu `Alaykum (السلام عليكم):
A
black hole is a region of space time from which nothing,
not even light, can escape.The theory of general relativity predicts
that a sufficiently compact mass will deform space time to form a black hole.
Around a black hole there is a mathematically defined surface called an
event horizon that marks the point of no return. It is called "black" because
it absorbs all the light that hits the horizon, reflecting nothing, just like a perfect
black body in thermodynamics. Quantum mechanics predicts that black holes emit
radiation like a black body with a finite temperature.
This temperature is inversely proportional to the mass of the black hole
making it difficult to observe this radiation for black holes of stellar mass
or greater.
Attachment 4472
source: http://www.nasa.gov/audience/forstudents/k-4/stories/what-is-a-black-hole-k4.html
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Al-Mursalat (Those Sent Forth)
فَإِذَا النُّجُومُ طُمِسَتْ (77:8)
Fai
tha a
lnnujoomu
tumisat
77:8
(Y. Ali) Then when the stars become dim;
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At-Tariq (The Night-Comer)
وَالسَّمَاء وَالطَّارِقِ (86:1)
Wa
alssam
ai wa
alttariq
i
86:1
(Y. Ali) By the Sky and the Night-Visitant (therein);-
وَمَا أَدْرَاكَ مَا الطَّارِقُ86:2)
Wam
a adr
aka m
a a
lttariq
u
86:2
(Y. Ali) And what will explain to thee what the Night-Visitant is?-
النَّجْمُ الثَّاقِبُ (86:3)
A
lnnajmu a
lthth
aqib
u
86:3
(Y. Ali) (It is) the Star of piercing brightness;-