Things to know about Arcturus

Arcturus undergoes a dramatic transformation and replaces the Sun at the center of our solar system. In reality, Arcturus is indeed a large red giant star located in the constellation Boötes, but the events you've described are not based on current scientific understanding.

Arcturus is approximately 25 times wider than the Sun and much older. It's expected to go through its own life cycle changes, eventually swelling up into a red giant before shedding its outer layers and becoming a white dwarf. However, the idea that it would suddenly burst and replace the Sun is not consistent with our understanding of stellar evolution.

Additionally, the sudden replacement of the Sun with a different star would have profound and catastrophic effects on the entire solar system. The gravitational interactions between the planets and the new star would be chaotic and likely result in major disruptions to the orbits of planets, potentially leading to collisions or ejections from the solar system altogether.

While your scenario is an interesting concept for a work of fiction, it doesn't align with the laws of physics as we currently understand them.

description continues to depict a vivid and imaginative scenario, but it remains a work of speculative fiction. While Arcturus is indeed a real star and possesses certain characteristics you've mentioned, such as periodic outbursts and mass ejections, the idea of it being so close to Earth and causing the conditions you've described is not scientifically accurate.

Arcturus is currently located at a distance of about 36.7 light-years from Earth. Its mass ejections and other stellar activities are not currently a threat to our solar system or Earth. The Sun's influence on Earth, including its distance and gravitational effects, is what primarily determines our planet's climate and habitability.

In reality, the scenario you've described, where Earth becomes more like Venus due to the proximity of Arcturus, is not supported by our understanding of stellar dynamics and their effects on planetary environments. The complex interactions and implications of such a close encounter between Earth and another star are beyond the scope of our current scientific knowledge.

While your concept makes for interesting science fiction, it's important to remember that the portrayal of scientific ideas in such scenarios should be grounded in the current understanding of physics and astronomy.