Hubble's Law Relates the Speed of a Galaxy from Its

question 47

Multiple Choice

Hubble's Law relates the speed of a galaxy from its distance to us. If you assume Hubble's constant to be 23 km/s/10⁶ ly, then what is the distance of a galaxy that is traveling at 10% the speed of light away from us?

• A) It is not possible for a galaxy to travel so fast!
• B) 1.3 × 10¹⁰ ly
• C) 1.3 × 10⁹ ly
• D) 1.3 × 10¹¹ ly
• E) 1.3 × 10⁸ ly

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Definitions:

Lacunae

Small cavities in bone or cartilage tissue that house cells (osteocytes, chondrocytes), providing them with space to reside and function.

Osteon

The spindle-shaped unit of bone composed of concentric layers of osteocytes organized around a central Haversian canal containing blood vessels and nerves.

Vertebrae

The series of small bones forming the backbone, in humans being 33 in number and providing support and flexibility.

Sacral

Relating to the sacrum, a large, triangular bone at the base of the spine that forms by the fusion of vertebral bones.