What is going on here? (I'm a little out of sorts)

TWs: Secrecy, rude behavior, non-graphic injuries/blood/twisted or sprained bones. Stay safe :)

"You've gone quiet, Sun," Jupiter noted as he glanced at the other, keeping his voice low, "Is it because of what happened earlier?"

Sun nodded, "That wasn't a normal reaction, especially for Earth; it felt more... erratic. And the way his eyes flashed a different color... I think these AetherStars are capable of enhancing emotions. Instead of Earth being annoyed or upset, he completely lashed out."

Jupiter sighed, "I have a feeling it won't be long until he does it again."

Sun nodded once more, going into thought again. He stared at Earth, who was leading the group through the bustling streets of Washington. They came to a stop at a crosswalk, 'I also have a feeling... he's hiding something.'

Earth felt he was being watched, peering over his shoulder and making eye contact with Sun. He jolted, quickly averting his gaze.

'Unless...' Sun raised his eyebrows, eyes casting a look of realization, 'He remembered something.'

Earth appeared more fidgety as he knew he was being scrutinized, movements quick and jumpy. As soon as the stoplight changed, he bolted to the other side of the crosswalk. Some also seemed to notice his change in demeanor.

"What's the rush, mate? It's not like this museum is closing anytime soon." Uranus huffed, placing a hand on his hip.

Mars glanced at a nearby street clock, "Yeah, we still have... five or six hours."

"Hahah, well, I'm very impatient when it comes to... these things." Earth cleared his throat, "A-Anyway, just one more block and we'll be there!"

"Oh, finally," Dione uttered, "All this walking is killing me..."

"Tell me about it." Europa spoke before looking around at all the Earthlings, "How do they do this every day?"

"Because they're used to it." Jupiter replied, "They've taught themselves everything from the very start, and they'll continue to teach and pass it on to future generations."

Uranus ran his hand along a brick building, analyzing the structure, "If this is all an illusion, why does everything feel so real...?"

"And tastes so real!" Neptune grinned, licking the nearest streetlight, "Mmh... metallic-y."

The group gave him a weird look, deciding to ignore the odd Celestial's action.

"These are AetherStars we're talking about. We have little to no information about them other than stories from my past." Sun spoke.

"Speaking of your past, have you remembered anything else?" Jupiter asked.

Sun sighed in exasperation, "Nope... I've been trying to, but all this thinking is making my head hurt..."

"I'm sure you'll remember something, Sun, just give it time." Saturn assured, "It'll come to you sooner or later."

"Let's hope it's not the latter..." Sun uttered.

...

"And here we are! The Smithsonian Museum of Natural History!" Earth raised his arms, gesturing to the grand building before them.

Everyone eyed it in awe and slight disbelief.

"Woah..." Ganymede whispered.

"This place is h-h-huge...!" Io exclaimed.

"Makes you wonder what else these Earthlings can do..." Titan smiled, starry-eyed as he gazed at the building in wonder.

"You may think this is big, but there are much bigger places," Earth spoke, raising his hands in a grand gesture. He peered over his shoulder at the group, starting to walk up the stairs of the building, "Anyway, are you guys just going to gawk at it or are we actually gonna explore-"