[/caption] Wake up, all you variable star observers!! According to AAVSO Alert Notice 384 released just minutes ago, the cataclysmic variable star – GK Persei – is beginning to wake up and appears to be entering another outburst. According to Matthew Templeton: “As reported in AAVSO Special Notice #125, the cataclysmic variable GK Persei appears … Continue reading "Observing Alert: Outburst of GK Persei"