Science
Related: About this forumVenus Invades the Pleiades- View This week only for a rare occurrence
April 2, 2012: Watch out Seven Sisters, Venus is coming.
This week the second planet from the sun will pass directly in front of the Pleiades star cluster. It's a rare sunset conjunction that's easy to find with the unaided eye, but best seen through binoculars or a small telescope.
The Pleiades, also known as the "Seven Sisters," are a cluster of young stars. They formed barely 100 million years ago during the age of dinosaurs on Earth from a collapsing cloud of interstellar gas. The biggest and brightest members are blue-white and about five times wider than our own sun.
Because of their distance, about 400 light years away, the Pleiades are near the limit of naked-eye visibility. When Venus joins them in conjunction, it will look like a supernova has gone off inside the cluster. Venus's thick clouds reflect so much sunlight, the planet outshines every thing in the night sky except the Moon. Strangely, though, the Pleiades do not look puny in comparison, just delicately beautiful.
Look west just after sunset, and see for yourself.
http://science.nasa.gov/science-news/science-at-nasa/2012/02apr_venuspleiades/
Pleiades-Earth Alignment to the Mayans
A closely packed group of seven stars, the Pleiades are sometimes referred to as the Seven Sisters (Image of The Pleiades ). But to such as the Aztecs, they were known as the Cabrillas. According to accounts provided by the early Spanish explorers of the 16th century, every 52 years the ceremony to mark the end of a sheaf period coincided with a precise observation of the Pleiades star group at midnight, when it appeared exactly upon the meridian. Now to be clear, in terms of a night-time observation, there is only one particular day of the year when such an event will happen; when one is able to observe the star cluster at the precise time of midnight, and at such a time when the stars themselves are located on the meridian line. At the precise moment though when this does happen, there is an active conjunction in evidence between the Pleiades, the Earth, and the sun. As indeed, at such a moment, exactly 180 degrees around the other side of the Earth, the Sun itself is at the 12 noon position, and thus directly behind the Earth and so lined up with the Pleiades.
In view of the above, it should be readily apparent then that there will be a notable discrepancy between the time interval of 32.5 Earth-Venus conjunctions (18977.4 days) and the time interval between two Earth-Pleiades conjunctions at 52 years apart. Indeed, the reason for this is that each of the two conjunction events involve, or rather rest upon, a different type of Earth year. In the case of the former, one is speaking of 52 calendar years, each of 365 days in length. In terms of the latter, 52 sidereal years, each of 365.256363 days. That this is so is due to the fact that the Pleiades, as a background star group, is susceptible to precession. One may note the difference between the two time intervals as follows:
Earth-Pleiades Cycle: 52 x 365.256363 = 18993.33088 days
Earth-Venus Cycle: (52 x 365) 2.6 = 18977.4 days
18993.33088 18977.4 = 15.930876 days
http://www.ancient-world-mysteries.com/pleiades-venus-mayan-calendar.html
Pleiades in folklore and literature many cultures around and what they thought of the star systems at wikipedia
http://en.wikipedia.org/wiki/Pleiades_in_folklore_and_literature
I loved my Subarus I've owned....LOL
sarge43
(28,941 posts)Ichingcarpenter
(36,988 posts)It faces west and gives a splendid view of the conjunctions of the planets and stars that have been occurring since the fall
Ichingcarpenter
(36,988 posts)As the evening twilight deepens around 8:30 p.m. local time Tuesday night (April 3), check out the southeast sky. Weather permitting, a waxing gibbous moon will be shining bright, but it won't be alone.
Situated well above the moon will be two bright "stars." I've placed the word stars in quote marks, because one of those stars is in reality a planet: the so-called Red Planet, Mars.
The planet will form a cosmic triangle with the moon, Mars and bright star Regulus. The arrangement can be seen in the sky map of Mars accompanying this planet viewing guide.
http://www.csmonitor.com/Science/2012/0403/Mars-moon-and-star-form-brilliant-sky-triangle-tonight
Regulus (? Leo, ? Leonis, Alpha Leonis) is the brightest star in the constellation Leo and one of the brightest stars in the night sky, lying approximately 77.5 light years from Earth. Regulus is a multiple star system composed of four stars that are organized into two pairs. The spectroscopic binary Regulus A consists of a blue-white main-sequence star and its companion, which has not yet been directly observed, but is probably a white dwarf star.
http://en.wikipedia.org/wiki/Regulus
bananas
(27,509 posts)There must be some astrological significance to this...
Ichingcarpenter
(36,988 posts)called them the chicks of the hens...look at the link I gave on the mythology.