. 24/7 Space News .
Nozomi Swings By Earth

Streaming from the outer space surrounding the solar system, the interstellar gas including helium and hydrogen passes through the solar system. The helium forms a dense area on the other side of the sun, from the earth strongly attracted by the solar gravitational force. This dense area is called the helium cone after its shape. The extreme ultra-violet telescope on-board the Mars orbiter, NOZOMI observes the spread of the helium cone by measuring the scattered solar rays by the helium particles. In the figure, the horizontal axis is the longitude and the vertical axis is the latitude of the universe. Color code represents the intensity of the measured solar rays with red latitude of indicating the most dense helium ion region, which is the helium cone. (Helium gas drifting in cosmic space observed by NOZOMI)
Tokyo - Apr 07, 2003
The Japanese Mars exploration mission Nozomi launched on July 4, 1998, is now cruising in interplanetary orbit, and on target for a final flyby of Earth ahead of insertion into Mars orbit at the end of 2003.

On December 21, 2002, the explorer came close to Earth and successfully implemented the earth swingby. The time of its nearest approach to Earth was at about 4:37 p.m. with a distance of approx. 30,000 km. This marked Nozomi's return home after a long absence.

At it's furthest point, it was 360 million km away from Earth. Unfortunately, when Nozomi was approaching Earth, we were unable to see it from Japan. By this swingby, the explorer deviated a little from the ecliptic plane and shifted to the trajectory passing the north of Earth.

After encountering a large solar flare involving coronal mass ejections on April 21, 2002, that damaged equipment and caused its power system to malfunction, Nozomi has been unable to send telemetry. Scientific observation during the cruising phase was therefore cancelled. But the ranging function for orbit determination and command receiving are normal.

In addition, by adopting an ingenious technique that makes use the Nozomi's onboard autonomous capability and substituting ON/OFF beacon radio waves for telemetry, we are able to implement attitude and orbital control. At present we are analyzing in detail the cause of the failure and searching for countermeasures for recovery.

Nozomi will execute the earth swingby again on June 19, 2003, and enter into cruising orbit inside the ecliptic plane. At the end of this year, the explorer will be ready to enter into the Mars orbit.

Related Links
Search SpaceDaily
Subscribe To SpaceDaily Express

Berkeley To Build Five Bird EO Constellation
San Francisco - Apr 02, 2003
NASA has awarded the University of California, Berkeley, a $173 million contract to build and operate a fleet of five satellites to pinpoint the event in Earth's magnetic neighborhood that triggers violent but colorful eruptions in the Northern and Southern lights.

Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.
SpaceDaily Contributor
$5 Billed Once

credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly

paypal only

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.