|Total eclipse of the Moon|
SPACE - This Wednesday, October 8th, Earth will overshadow the Moon.
If this astronomical phenomenon will not be visible from France, there are ways to watch live anyway. Explanations.
► When is the red moon?She is due October 8, 2014 but it will unfortunately not visible from France. "The phenomenon is expected to begin around noon in France, says Jean-Luc Dauvergne, a reporter for Sky and Space magazine. It will last about ten minutes." Very specifically, the maximum eclipse will take place at 10 am UTC 54, or 12 h 54 in France. The duration of a total lunar eclipse is about six hours.
► How to observe the red moon anyway?
If you can not fly to the United States at the last minute, there are still some websites that will broadcast streaming (live streaming) event. For example, you can log in on The Virtual Telescope, Slooh.com or the Space Science Center of the University of Columbus. Perfect for your lunch break!
► Why does it take the moon a copper color?
To understand this, one must imagine the moon, when the satellite will be perfectly aligned with the Earth and our planet behind the Sun. "A bright ring appears around the Earth. A small portion of the light from the Sun is visible despite the alignment but the atmosphere allows only some color, especially the light wheel. Since the moon, we would see so especially this color, "says Jean-Luc Dauvergne. And the copper color is reflected on the Earth satellite.
► What explains that color is never the same?
The color can vary from orange to blood red: "It depends on the state of the atmosphere, says Patrick Rock, an astronomer at the IMCCE (Institute of Celestial Mechanics and Computation ephemeris of the Observatory of Paris. It is difficult to know in advance what the exact color of the sun. for example, if an eclipse occurs when a volcanic eruption, there will be many individuals suspended in the air, the Moon can then be very red. "
► The total lunar eclipse is it an opportunity to make specific observations in the sky?
If, due to a lower brightness of the moon, the Milky Way is visible, nothing beats the total lack of moon. But as Patrick admits Rock, "lunar eclipses have really astronomical interest, except to confirm that they are made well on time." A phenomenon so pretty, but more a scientific curiosity.
► What is this phenomenon of tetrads?
It is a rare astronomical phenomenon, which have occurred only three times in 500 years, says NASA, the American space agency. Patrick Rock confirms "that occurs 177 times out of 6000 years, over a period of 3000 BC to 3000 AD It is rare but we can observe another in 2033-2033... "The tetrads is the perfect alignment on four occasions, the Moon, the Sun and the Earth. The first episode occurred on 14-15 April 2014 (resulting in stunning images), the second takes place this October 8th and the following will take place in April and September 2015.
► Why four total eclipses in a time so close?
"The lunar eclipses occur every five to about six lunar months, but they are often partial, says astronomer There may be between four and seven out of eight eclipses per year that will succeed, they are growing..: darkness and shadows ... and total eclipses take place in the middle of the series. "At that time, they come by twos and threes, or in rarer cases, by four as is the case here. But it's the maximum, there is never five. To us, therefore, make the most of this unusual series.