<p></p> <p>Three decades ago, astronomers spotted one of the brightest exploding stars in more than 400 years. The titanic supernova, called Supernova 1987A (SN 1987A), blazed with the power of 100
<p style="text-align: center;"><a href="https://www.nightskyobserver.com/wp-content/uploads/2017/02/LunarPhase-Pro-Version-4.jpg" target="_blank"></a><em>The Main Screen for LunarPhase Pro Verison 4.<br /> Click the image for a full-size view</em></p> <p>I wrote my first astronomy application back in 1981 while I was
