December 12, 2019

Astro-Event: The Red Planet Meets the “Anti-Mars.”

All hail the “Anti-Mars!”

No less than two astro-events mark the passage of Astronomy Day on October 20th, a day so cool, we repeat it twice! The other Astronomy Day on the calendar for 2012 was on April 28th. (Hey, the sky changes, y’know?)

First up, the planet Mars meets the bright star Antares (a.k.a. Alpha Scorpii), passing just over 3° degrees to its north on the 20th. Mars has added an appreciably different look to the constellation since passing into Scorpius and sliding by Delta Scorpii on October 10th. Coincidentally, now is a good time to compare Mars and its astronomical antithesis. [Read more...]