TWO MOONS on 27th August ...

Example of the Email

This month and next, Earth is catching up with Mars in an encounter that will culminate in the closest approach between the two planets in recorded history. The next time Mars may come this close is in 2287. Due to the way Jupiter's gravity tugs on Mars and perturbs its orbit, astronomers can only be certain that Mars has not come this close to Earth in the Last 5,000 years, but it may be as long as 60,000 years before it happens again.

The encounter will culminate on August 27th when Mars comes to within 34,649,589 miles of Earth and will be (next to the moon) the brightest object in the night sky. It will attain a magnitude of - 2.9 and will appear 25.11 arc seconds wide. At a modest 75-power magnification Mars will look as large as the full moon to the naked eye .

Mars will be easy to spot. At the beginning of August it will rise in the east at 10p.m. and reach its azimuth at about 3 a.m.

By the end of August when the two planets are closest , Mars will rise at nightfall and reach its highest point in the sky at 12:30a.m. That's pretty convenient to see something that no human being has seen in recorded history. So, mark your calendar at the beginning of August to see Mars grow progressively brighter and brighter throughout the month.

Share this with your children and grandchildren.

NO ONE ALIVE TODAY WILL EVER SEE THIS AGAIN


The Reality

Commentary:
An email that has circulated during July and August for several years is again hitting inboxes in 2007. The message informs recipients that the planet Mars will be passing very close to Earth in August. While this information was valid back in 2003, it is totally inaccurate for 2007.

The year is not specifically mentioned in the message and a great many recipients therefore assume that the message refers to August, 2007. Another version of the message is circulating via SMS. Virtually identical (and equally misleading) messages were circulating back in July and August 2005 and again in July and August 2006. The events outlined in the message were more or less true back in 2003 although they were a little hyped even then. According to NASA, on August 27, 2003, Earth and Mars were the closest they have been for around 60,000 years. Mars was indeed a spectacular site in the night sky during several months of 2003.

However, this fact is not quite as earth shattering as you might think. A 2003 NASA article on the subject explains that:

Much has been made of the fact that the August 27th encounter with Mars is the closest in some 60,000 years. Neanderthals were the last to observe Mars so favorably placed. This is true. It's also a bit of hype. Mars and Earth have been almost this close many times in recent history.

In spite of the claims in the 2006 incarnation of the message, Mars was a far less than "spectacular" sight in the night sky. For much of 2006, it was on the far side of the sun from the Earth and was quite inconspicuous during July and August.

And, during July and August 2007, the view of Mars will again be far less than spectacular. Mars will make its closest approach to Earth in December 2007, but, even then, it will not be particularly bright. The SEDS website notes:

Mars will come into its Opposition on December 24, 2007 in constellation Gemini. Six days earlier, on December 18, 2007, the planet will have come to its closes distance to Earth during this apparation: 88.42 million km (55 million miles, or 0.58935 AU). This is not very close, as Mars will be quite close to its aphelion at the time of this opposition. As usual, this approach will offer another opportunity to launch spacecraft to the red planet: Nasa intends to send the Mars lander Phoenix.

The planet will be situated far north: At a northern declination of +26:46 at opposition time, Northern hemisphere observers will find it high in their meridian, and Southerners will find it low in the North. In this rather aphelic opposition, the planet will become only as bright as mag -1.64, and of diameter 15.88 arc seconds around that time.

At around 88 million kilometers, Mars will be a lot further away from Earth this year than it was back in 2003 when the distance between the planets was only around 56 million kilometers.

This message seems set to keep resurfacing every year and duping a whole new set of recipients into gazing rather fruitlessly at the night sky. But don't despair! Close encounters with Mars are not such uncommon events. The claim that "NO ONE ALIVE TODAY WILL EVER SEE THIS AGAIN!" is misleading. It is true that the next time Mars will be as close to Earth as it was in 2003 will be on August 28, 2287. In the mean time however, there will be plenty of other close approaches, so our children and our children's children are not likely to miss out altogether.

Perhaps by 2287 some of our descendants will be observing the close encounter from the Martian perspective.

A slightly different version of the hoax email:

Subject: 2 MOONS ON 27 AUGUST 2007

27th August 2007, a Monday the Whole World is waiting for.............2 moons on 27th August 2007

Planet Mars will be the brightest in the night sky starting August. It will look as large as the full moon to the naked eye. This will cultivate on Aug. 27, 2007 when Mars comes within 34.65M miles of earth. Be sure to watch the sky on Aug. 27 12:30 am. It will look like the earth has 2 moons.

The next time Mars may come this close is in 2287.

Share this with your friends as NO ONE ALIVE TODAY will ever see it again.

Source http://www.hoax-slayer.com/mars-earth-close.html