East, Singapore
January 2015
Intrigued by a post on a local forum, Merlion Wayfarer recently braved the dark and the mosquitoes to catch Comet Lovejoy.
Comet Lovejoy gets its eye-catching colour from two gases, cyanogen and diatomic carbon, which both glow green when sunlight passes through them. Its green hue is produced by molecules of diatomic carbon in the coma that fluoresce under the Sun's ultraviolet rays. In contrast, its delicate gas tail is tinted blue due to fluorescing charged molecules of carbon monoxide.
Sources
- "Binocular Comet Lovejoy Heading Our Way" by Alan MacRobert (28 December 2014). Sky & Telescope. Retrieved from http://www.skyandtelescope.com/astronomy-news/observing-news/binocular-comet-lovejoy-heading-c2014-q2-lovejoy-1211142/
- "Constellation Guide" (12 January 2015). Star Date. Retrieved from http://stardate.org/nightsky/constellations
- "Dazzling green Comet Lovejoy tears across the sky in closest encounter with Earth to date" by Mia De Graaf & Jack Crone (11 January 2015). Daily Mail UK. Retrieved from http://www.dailymail.co.uk/news/article-2905630/Dazzling-green-Comet-Lovejoy-tears-sky-closest-encounter-Earth-date.html
- "Subaru Telescope Captures the Fine Details of Comet Lovejoy’s Tail" by Jason Major (06 December 2013. Universe Today. Retrieved from http://www.universetoday.com/106995/subaru-telescope-captures-the-fine-details-of-comet-lovejoys-tail/
- "When and where to see Comet Lovejoy" (09 January 2015). Telegraph UK. Retrieved from http://www.telegraph.co.uk/news/science/space/11333541/When-and-where-to-see-comet-Lovejoy.html