Like Solar/Moon Eclipse if, SUN,MERCURY,VEVUS and EARTH r in same line,then what happens,what we call it?

Question

sun,moon and earth r in same line we call eclipse.in same manner if Sun,Mercury,Venus and Earth r in same line what we call it?is there any possibility of such occation? if so, what happens and when?i feel,atleast there may be chance of Sun,Mercury or Venus and Earth may come in line.if so ,what will be the duration of darkness and occurance?

Answer 1

It is called a Transit

The word "transit" refers to cases where the nearer object appears considerably smaller in apparent size than the more distant object. Cases where the nearer object appears larger and completely hides the more distant object are known as occultations. Cases where one object moves into the shadow of another are known as eclipses. Each of these three terms are the visible effects of a syzygy.

One example of a transit involves the motion of a planet between a terrestrial observer and the Sun. This can happen only with inferior planets, namely Mercury and Venus However, as seen from outer planets such as Mars, the Earth itself transits the Sun on occasion.

The term can also be used to describe the motion of a satellite across its parent planet, for instance one of the Galilean satellites (Io, Europa, Ganymede, Callisto) across Jupiter, as seen from Earth.

A transit requires three bodies to be lined up in a single line. More rare are cases where four bodies are lined up. One such case occurred on March 21, 1894 at around 23:00 UTC, when Mercury transited the Sun as seen from Venus, and Mercury and Venus both simultaneously transited the Sun as seen from Saturn (see Transit of Mercury from Saturn and Transit of
There would be no darkness. In fact if you werent aware of this,you would never notice.

__VENUS__

It would last for about six hours and if you have a telescope and know how to project SAFELY,you will be able to observe it. The next one will be in June 2012 and will be visible in its entirety from Hawaii, Australia, the Pacific and eastern Asia, with the beginning of the transit visible from North America. After that, this will happen in 2117.Transits of Venus are the rarest of all predictable astronomical phenomena and currently occur in a pattern that repeats every 243 years, with pairs of transits eight years apart separated by long gaps of 121.5 years and 105.5 years. Before 2004, the last pair of transits of Venus were in December 1874 and December 1882. The first of a pair of transits of Venus in the beginning of the 21st century took place on June 8, 2004 (see Transit of Venus, 2004) and the next in this pair will be on June 6, 2012 (see Transit of Venus, 2012). After 2012, the next transits of Venus will be in December 2117 and December 2125.

The pattern repeats every 243 years because 243 sidereal orbital periods of the Earth (365.25636 days, which is slightly different from the tropical year) is 88757.3 days, and 395 sidereal orbital periods of Venus (224.701 days) is 88756.9 days. Thus, after this time both Venus and Earth have returned to very nearly the same point in each of their respective orbits. This period of time corresponds to 152 synodic periods of Venus.
The pattern of 105.5, 8, 121.5 and 8 years is not the only pattern that is possible within the 243-year cycle. Prior to 1518, the pattern of transits was 8, 113.5 and 121.5 years, and prior to 546, transits always took place 121.5 years apart. The current pattern will continue until 2846, when it will be replaced by a pattern of 105.5, 129.5 and 8 years. Thus, the 243-year cycle is relatively stable, but the number of transits and their timing within the cycle will vary over time.


_MERCURY_

A transit of Mercury across the Sun takes place when the planet Mercury comes between the Sun and the Earth, and Mercury is seen as a small black dot moving across the face of the Sun.

Transits of Mercury with respect to Earth are much more frequent than transits of Venus, with about 13 or 14 per century, in part because Mercury is closer to the Sun and orbits it faster.

Transits of Mercury can happen in May or November. November transits occur at intervals of 7, 13, or 33 years; May transits only occur at intervals of 13 or 33 years. The last two transits were in 1999 and 2003; the next two will occur in 2006 and 2016.

During a May transit, Mercury is near aphelion and has an angular diameter of 12"; during a November transit, it is near perihelion and has an angular diameter of 10".

The next one will be on 2006 Nov 08 at 19:12 UTC

Answer 2

A Stellium Eclipse Conjunction

Answer 3

DOOM!
thats what it's called
accually no
its called the END OF THE WORLD
or maybe not
probably what the first person said

Answer 4

check out this link:

http://www.griffithobs.org/SkyAlignments.html