Multiple choice general knowledge science & technology

The known closest black hole to Earth is

  1. Cygnus Y-1

  2. Cygnus X-1

  3. Cygnus Y-2

  4. Cygnus X-2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Cygnus X-1, located about 6,070 light-years away in the constellation Cygnus, is one of the first and most famous confirmed black holes. It was discovered in 1964 and was the first strong candidate for a black hole. The other options (Cygnus Y-1, Y-2, X-2) are not recognized astronomical objects.

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