456 a
This view of Earth was photographed through the 250mm telephoto lens.

“I did, of course, occasionally think of the possibility that the spacecraft explosion might maroon us in an enormous orbit about the Earth—a sort of perpetual monument to the space program,” said James Lovell. “But Jack Swigert, Fred Haise, and I never talked about that fate during our perilous flight. I guess we were too busy struggling for survival” (NASA SP-350, p. 262).

456 b
“When we turned off the electrical systems, we lost our source of heat, and the Sun streaming in the windows didn’t help much. We were as cold as frogs in a frozen pool.”
James Lovell (NASA SP-350, p. 262)

456 c
The cockpit of the LEM was supposed to be a bright and active place, but on Apollo 13 it became a darkened still lifeboat, as the crew shut down nearly all of its power and took refuge in the hope of getting home after an explosion disabled their Command Module.

“In the cold gloom, one crew member stayed on watch at all times. Stay-awake pills helped during the final hours as the Earth came whistling at them like a freight train” (NASA SP-350, p.258).

“The trip was marked by discomfort beyond the lack of food and water. Sleep was almost impossible because of the cold.”
James Lovell (NASA SP-350, p. 262)

456 d
This view of Earth was taken through the 60mm lens from the window of the LM Aquarius.

By this time in the journey the CSM and its attendant LM had passed into the Earth’s gravitational sphere of influence and were beginning to accelerate.

From the mission transcript during the homeward journey:

096:21:16: Kerwin (Mission Control): And Jack, Houston. For your information, FIDO (Flight Dynamics Officer) tells me that we are in the Earth’s sphere of influence and we’re starting to accelerate.
096:21:29 Swigert: I thought it was about time we crossed. Thank you.
096:21:33 Kerwin: Roger.
096:21:39 Swigert: We’re on our way back home.