Then, it was just us.

Giana dumped her bag in the corner of the oval-shaped room, eyes bright beneath the reflective lenses of her glasses as she smiled up at the open sky above us. Most of it was covered by the top of the observatory dome, but there was a wide-open gap where the telescope pointed through. When she bent to take her first look through the viewfinder, she gasped, smile widening.

“You have to see this,” she breathed, pulling away only to grab my wrist and tug me over to the machine.

There were three different telescopes, but she’d picked the largest one, and when I bent to look in for myself, I understood why.

The sky above Boston typically only gave way to a few stars and maybe a planet or two, the city lights too bright to see much else. But through this lens, the stars came to life, a whole galaxy of them sparkling in the black. But it wasn’t just black — you could even see the gasses of pink and blue swirling among the darkness.

“Magnificent, isn’t it?” Giana asked behind me.

I nodded, pulling away so she could look in again. She carefully adjusted some settings and the area of focus, smiling like a kid in a candy store when she found what she was looking for.

“Saturn,” she breathed, and then she tugged me down to look with her.

And I couldn’t hide my surprise when I did.

“Whoa,” I said, in awe at how clear it was, how we could see the rings spread out around the planet as if it were just a football field away.

“Perfect visibility for it tonight,” Giana said. “We should be able to find Mars and Jupiter, too.”

I shook my head, pulling back to let her play with the settings again. As she did, I watched her, completely awestruck by how she lit up when she had education at her fingertips. She was antsy the way a drug fiend might be before a hit — bouncing a little on her toes, smiling so wide it made my cheeks hurt.

“Saturn is mostly hydrogen,” she said as she squinted through the lens and slowly moved the scope with the controls. “It also has one-hundred-and-fifty moons. Can you believe that? That planet is in the same solar system as ours and it’s mostly gas and moons.” She shook her head. “Wild.”

The corner of my mouth crept up watching her in her element. Nothing amped her up the way discovering something new did, and I marveled at how curious she was, at how she was like an endless encyclopedia of fun facts, not because she’d studied and committed anything to memory, but because she simply loved learning that much.

But as fast as the smile had bloomed, it died again, my chest aching with thoughts of my mom suffering on the other side of the country.