Last month I noticed that the bright rays of gas (Ha, OIII and SII) flowing from Alpha Cassiopeiae (Schedar) near the Pacman Nebula is no longer visible. I imaged Pacman Nebula moving it to the left side -still no sign of gas. Does it mean that Alpha Cassiopeiae emanates less? Do we lose another star?

Interesting coincident: there is a Soviet comic science fiction film  Moscow-Cassiopeia (Russian: Москва — Кассиопея, romanized: Moskva-Kassiopeya) film directed by Richard Viktorov based on a script by Isai Kuznetsov and Avenir Zak. Followed by Teens in the Universe (second part, 1975). From the depths of the universe Earth can hear the radio signals of intelligent beings from a planet of the star system Shedar in the Cassiopeia constellation. A project is set up, proposed by the young inventor Vitya Sereda, to send a spaceship to reach the planet - but the flight will last for decades, so the crew of the spaceship ЗАРЯ or Zarya (an acronym for Spaceship (zvezdolet) Annihilation Relativistical Nuclear (yaderniy), also meaning "dawn"), is to be recruited from teenage students.The project is all carefully thought out but student Fyodor Lobanov stows away aboard the starship and unwittingly causes it to transcend the speed of light and so reaching its target 27 years ahead of schedule... The crewmembers of ZARYa starship supposed to mature during 27-year-long flight, appear at the Shedar system after less than one year of local time travel. Remote sensing verifies that one of the planets is very much Earth-like. Three of the crew members should land the new planet. They use the reconnaissance capsule and encounter the apparently abandoned planet. But the "extra" member of the crew Lobanov meets the strange more or less human-like creatures that escort him and his mates to the underground city. They become unreachable for radio communications.During this link outage orbiting ZARYa rendezvous with another giant spaceship. The commander of that ship explains that their home planet is populated only by the two kinds of bionic robots - executors and far more advanced rulers. These robots were invented two centuries ago, but after some period of good work, rulers tried to improve humans as well as the nature of the planet. Unfortunately, this "improvement" led to the total aloofness of the processed people, including suppression of love and reproductive behavior. After a century and a half all population of the planet was dead. Only the space radio observatory station crew was unreachable for the robotic "care".ZARYa crew sets up the second capsule to rescue the crew members captured by robots. Agapit, the son of the station commander, will be their guide in the underground city. After some troubles, boys counterfeit the recharging request from the power plant and burn up all robots at the planet, making it free for the space stationers......

What if their mission failed and robots-rulers took over? Could they blow out the star? Darth Vader probably could