NASA spots farthest galaxies fuelled by massive black holes

Q.  NASA has spotted farthest galaxies powered by?
- Published on 06 Feb 17

a. Black holes
b. White dwarf stars
c. Brown dwarf stars
d. None of the above

ANSWER: Black holes
NASA spots farthest galaxies fuelled by massive black holesNASA’s Fermi Gamma-ray Space Telescope has identified the farthest gamma-ray blazars.

This is a type of galaxy whose intense emissions are powered by supersized black holes.

Light from the most distant object began its journey to us when the universe was 1.4 billion years old, or nearly 10 percent of its present age.

Experts say they could shed fresh light on how black holes form.

What is a Black Hole?
  • A black hole is a region of spacetime exhibiting strong gravitational effects.
  • Nothing - not even particles and electromagnetic radiation such as light - can escape from inside it.
  • The theory of general relativity predicts that a sufficiently compact mass can deform space time to form a black hole.

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