Then she went on to the upper deck.
To her astonishment she found, on one hand, day more brilliant than she had ever seen it before, and on the other hand darkness blacker than the blackest earthly night.

On the right was an intensely brilliant orb, about half as large again as the full moon seen from the earth, shining with inconceivable brightness out of a sky black as midnight and thronged with stars.

It was the Sun; the Sun shining in the midst of airless Space.
The tiny atmosphere enclosed in the glass-domed deck-space was lighted brilliantly, but it was not perceptibly warmer, though Redgrave warned her not to touch anything upon which the sun's rays fell directly, as she might find it uncomfortably hot.

On the other side was the same black immensity which she had seen the night before, an ocean of darkness clustered with islands of light.

High above in the zenith floated the great silver-grey disc of earth, a good deal smaller now.
But there was another object beneath them which was at present of far more interest to her.
Looking down to the left, she saw a vast semi-luminous area in which not a star was to be seen.