dyson swarm , ring world . space city circling around star

advanced alien anomaly artificial astronomy brightness built capture circling city civilization civilizations collect collecting constellation cosmic cosmology cygnus dim dip dyson energy extraterrestrial fiction fluctuation glowing illustration irregular kepler life light massive megastructure mystery needed oscillation photometric photometry planet power radiation rays render rendering ring scaffolding science scifi search seti solar space star stellar sun sunlight superstructure surrounding swarm technological technology transit world