This is the 5100th most frequent Russian word.
мягко
Softly.
The word 'мягко' is used here as an adverb to describe the manner of speech, implying gentleness and smoothness.
Он всегда говорит так мягко.
He always speaks so gently.
'Мягко' is used to describe the quality of the moonlight, implying a soft and non-harsh light.
Мягко светил лунный свет через окно.
The moonlight softly shone through the window.
Here, 'мягко' describes the manner in which the landing occurred, emphasizing the gentle and non-forceful nature of the motion.