"A portal. Right. Of course it's a portal." She laughed a little deliriously, shaking her head before turning to follow the Doctor's gaze as he looked back the way they had come. It looked like an awkwardly bad Photoshop manipulation, a hovering swath of cypress and scrub pine that nearly obscured the rippling, ribbon-like river. Even the lighting was disconcertingly different, shadows jutting in the wrong direction as they were cast by their own lunar light source in their own world. It was an uncannily surreal feeling, to be literally so close to home and yet across untold distance on another world.

He was talking about the atmosphere, and she had a sudden new flood of relief that they had ended up somewhere they could breathe. At least, it appeared as though they could-- hopefully they wouldn't pass out soon and slowly suffocate to discover they were wrong. She wondered if the Doctor really knew the atmospheric composition, or if he was just guessing. Or hoping. "How do you know it's like Earth's?"

And then-- "A TARDIS? What's a TARDIS?"

She'd barely gotten the second question out when the melodic, luminous hum of what she somehow knew to be the fireflies tickled at her consciousness once again. Still, she couldn't make out the words, but she watched as the tiny lights coalesced once again to form another star map. She gazed at it with rapt fascination as the Doctor identified their location.

"Andromeda," she murmured, entranced, barely cognizant of her own words. "Never been here before..."