Archive for Regulus

3 planets, Venus, Mercury (then at greatest elongation from the Sun), Mars & the Moon are gathering for a beautiful alignment

Posted in 2017, astronomy, Galaxy, Uncategorized with tags , , , , , on January 17, 2021 by MARIE EMMANUELLE QUILICHINI


MORNING PLANETS ALIGN: Set your alarm for dawn. Three planets and the crescent Moon are gathering for a beautiful alignment before sunrise. Alan Dyer sends this preview from Gleichen, Alberta

“This was the view on the morning of Sept. 12th, of Venus, Mercury (then at greatest elongation from the Sun) and Mars in the dawn sky, along with the star Regulus.” says Dyer. With Earth in the picture, this was an image of all four rocky terrestrial planets in one frame!”

In the mornings ahead, the crescent Moon will join the show, hopping from one planet to the next.  Venus and the Moon will look especially lovely together on Sept. 17th and 18th, while on the 19th and 20th Venus and Regulus pass one another less than 1 degree apart. Look east before sunrise and enjoy the show! Sky maps:Sept. 17, 18, 19, 20. Green Comet, Ison, Red Planet, Mars

Posted in 2013 with tags , , , , , , , , on October 18, 2013 by MARIE EMMANUELLE QUILICHINI

GREEN COMET, RED PLANET: Comet ISON, which will fly through the atmosphere of the sun on Nov. 28th, is now flying past the planet Mars. The green comet and the Red Planet are just 1o apart in the eastern sky before dawn. Parks Squyres photographed the odd couple from his private observatory in SaddleBrooke, Arizona, on Oct. 16th:

Mars is almost as bright as a 1st-magnitude star, easy to find in the constellation Leo near the blue star Regulus. The comet, on the other hand, is invisible to the unaided eye. Mid-sized backyard telescopes are required to see it.

“I used a Celestron 11-inch telescope,” says Squyres. “The image is a stack of 80 15-second exposures.”

The comet is green because its vaporizing nucleus emits diatomic carbon, C2, a gas which glows green in the near-vacuum of space. Mars is red because its rocky surface is widely rusted. The two colors make a heavenly ensemble. Amateur astronomers, if you have a GOTO telescope, enter these coordinates, and let the exposures begin.



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