 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
| . |  |
. |
Mars On Show Throughout Tonight
for NASA Science News Huntsville - Aug 27, 2003 At 09:51 universal time (UT) on August 27th, Earth makes its closest approach to Mars in nearly 60,000 years. The two worlds, center-to-center, will be just 56 million kilometers apart--a short distance on the scale of the solar system. The last people to come so close to Mars were Neanderthals.
Table notes: (1) Approximate times and distances were calculated using JPL HORIZONS. (2) Dtahiti compares the minimum distance to Mars from the listed city to that of Tahiti. For example: people living in Tahiti will get 55 km closer to Mars than people living in Samoa. (3) UT is universal time. (4) Local time means the time on clocks in the tabulated city. Magazine articles, newspapers, and TV shows have touted the encounter for months. But they all omitted one detail: Which part of Earth? Think about it: At the moment of closest approach one side of our planet will be closer to Mars than the other. Earth is about 12,756 km wide, so the difference--one side vs. the other--is trifling compared to the vast distance between the two worlds. But the fact remains that someone, somewhere will be the closest ever to Mars. Where? The answer is Tahiti. The islands of French Polynesia will be facing Mars at the precise moment the two planets converge. People living on Tahiti and nearby islands will therefore be the closest to Mars. While Tahiti is facing toward the red planet, another spot on Earth diametrically opposite will be facing away: the Nubian Desert of Sudan. This is the place on Earth farthest from Mars. Everyone on Earth will have a close encounter with Mars this Wednesday. Your personal encounter happens when Earth's rotation carries your hometown across the Mars-facing side of our planet. None of these encounters will be as close as the Tahitians'--but they're all good. The table above lists moments of closest approach for selected cities around the world. New York City, for instance, will be nearest to Mars at approximately 05:46 UT (1:46 EDT) on August 27th. The last column (DTahiti) is a comparison to Tahiti. People living in Tahiti will get 3172 km closer to Mars on August 27th than people living in New York. A good rule of thumb: If you want to see Mars when it's closest to your hometown, be outside around 1 o'clock Wednesday morning. Look south and up. Contrary to some reports, Mars will not be as big as the full moon nor will it cast shadows. But it will be bright (magnitude -2.8) and beautiful--like an intense butterscotch-colored star. You can see it even from brightly-lit cities.
If you oversleep on August 27th, or clouds get in the way of Mars, don't worry. Mars will remain bright and beautiful for many weeks to come. "Many people have the misimpression that there is something special about the appearance of Mars on August 27th, as if it were substantially closer then than the day before or after," notes John Mosley of the Griffith Observatory in Los Angeles. "The reality is that Mars is close to earth all the month of August and will remain close all through September. The distances involved are great and they change little from one day to the next." The best night, he advises, is any night when the air is steady and the skies are clear. In fact, Mars is going to become easier to see during the weeks ahead simply because it rises earlier and earlier each day. By mid-September it will be high in the sky before bedtime--nearly as brilliant as it is now.
Travels and Trifles Even more trifling is the difference between French Polynesia and other parts of Earth. Mars will look the same this week from Tahiti as it does elsewhere. Being a few thousand kilometers closer to something 56 million kilometers away just doesn't make much difference. On the other hand, a warm sea breeze, the crashing of waves on the beach, the ambiance of the South Pacific ... these factors may have some effect on Mars watchers beyond the ken of science. Perhaps a research expedition is in order. We leave that for the reader to decide.
Table notes: (1) Approximate times and distances were calculated using JPL HORIZONS. (2) Dtahiti compares the minimum distance to Mars from the listed city to that of Tahiti. For example: people living in Tahiti will get 55 km closer to Mars than people living in Samoa. (3) UT is universal time. (4) Local time means the time on clocks in the tabulated city. Related Links SpaceDaily Search SpaceDaily Subscribe To SpaceDaily Express 
New Findings Could Dash Hopes For Past Oceans On Mars
Tempe - Aug 26, 2003After a decades-long quest, scientists analyzing data from NASA's Mars Global Surveyor spacecraft have at last found critical evidence the spacecraft's infrared spectrometer instrument was built to search for: the presence of water-related carbonate minerals on the surface of Mars.
|
|
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| The content herein, unless otherwise known to be public domain, are Copyright 1995-2016 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement All images and articles appearing on Space Media Network have been edited or digitally altered in some way. Any requests to remove copyright material will be acted upon in a timely and appropriate manner. Any attempt to extort money from Space Media Network will be ignored and reported to Australian Law Enforcement Agencies as a potential case of financial fraud involving the use of a telephonic carriage device or postal service. |
