Question

GN-z11 is the most distant galaxy we have observed, its distance from us is 9.8 Giga parsecs (Giga = 10⁹). The parsec (symbol: pc) is a unit of length used to measure large distances to astronomical objects outside the Solar System. If 1 pc = 3.26 light years (ly), and 1 ly = 9.45x10¹5 m.

a) 31.87 billion ly
b) 30.21 billion ly
c) 32.54 billion ly
d) 29.88 billion ly

Answer 1

The most distant galaxy we have observed, GN-z11, is approximately 31.87 billion light years away from us.

Step-by-step explanation:

The distance from Earth to the galaxy GN-z11 is 9.8 Giga parsecs (Gpc). To convert this distance to light years (ly), we can use the conversion factor: 1 parsec = 3.26 light years. Therefore, 9.8 Gpc is equal to (9.8 * 3.26) billion light years. Calculating this, we get:

(9.8 * 3.26) = 31.87 billion light years.

So, the most distant galaxy we have observed, GN-z11, is approximately 31.87 billion light years away from us.