Space advertising is not currently a problem, but the enterprise needs to be smothered before it has a chance to grow, according to a group of concerned astronomers.

Credit: StartRocket WASHINGTON — Astronomers are calling on nations to ban advertising in space that can be seen from the ground, calling it the latest threat to the dark and quiet sky.

The solar firm is part of Google’s “50 States, 50 Stories” campaign, and the ad about it ran on Fox Arizona channels during ...