SB 10.6.4

sā khe-cary ekadotpatya
 pūtanā nanda-gokulam
yoṣitvā māyayātmānaṁ
 prāviśat kāma-cāriṇī
Synonyms: 
— that (Pūtanā); khe-carī — who traveled in outer space; ekadā — once upon a time; utpatya — was flying; pūtanā — the demon Pūtanā; nanda-gokulam — at the place of Nanda Mahārāja, Gokula; yoṣitvā — converting into a very beautiful woman; māyayā — by mystic power; ātmānam — herself; prāviśat — entered; kāma-cāriṇī — one who could move according to her own desire.
Translation: 
Once upon a time, Pūtanā Rākṣasī, who could move according to her desire and was wandering in outer space, converted herself by mystic power into a very beautiful woman and thus entered Gokula, the abode of Nanda Mahārāja.
Purport: 

Rākṣasīs learn mystic powers by which they can travel in outer space without machines. In some parts of India there are still such mystical witches, who can sit on a stick and use it to fly from one place to another in a very short time. This art was known to Pūtanā. Assuming the feature of a very beautiful woman, she entered Nanda Mahārāja’s abode, Gokula.