On earth it implies drops of water falling down. Because it looks red to the naked eye when it is closest to the earth. But so does Mercury. Yes, other stars. Tail of a comet.
Explosions happen on the Sun all the time.
Usually these are called eruptions and result in solar flares- a stream of very energetic charged particles that travels in space and occasionally reaches the earth. This is one of the questions that we are trying to find an answer to, on other planets. Undoubtedly the formation of life changed the atmosphere on the earth. The early atmosphere on the earth was not very oxygen rich. Different planets evolved differently and that process resulted in different compositions of planetary atmospheres.