Featured Research

from universities, journals, and other organizations

NASA Spacecraft Provides Critical Link In Sun-Earth Chain

Date:
June 5, 2002
Source:
Johns Hopkins University
Summary:
NASA's TIMED (Thermosphere, Ionosphere, Mesosphere, Energetics and Dynamics) spacecraft recently observed our atmosphere's response to a series of strong solar storms, providing important new information on the final link in the Sun-Earth Connection (SEC) chain of physical processes connecting the Sun and Earth.

NASA's TIMED (Thermosphere, Ionosphere, Mesosphere, Energetics and Dynamics) spacecraft recently observed our atmosphere's response to a series of strong solar storms, providing important new information on the final link in the Sun-Earth Connection (SEC) chain of physical processes connecting the Sun and Earth.

Related Articles


"Several NASA spacecraft measured this strong activity coming from the Sun. Now TIMED provides the critical link between what happened on the Sun and Earth's response," says Dr. Sam Yee, TIMED project scientist, from the spacecraft's operations center at the Johns Hopkins University Applied Physics Laboratory in Laurel, Md., and leader of the mission's science team.

"TIMED allows us to observe the global reaction of our upper atmosphere to solar activity," says Dr. Mary Mellott, TIMED program scientist from NASA Headquarters in Washington. "One of the current puzzles for the Sun-Earth Connection community is determining why some solar activity has significant geospace impact and some does not. Being able to monitor the impact so well with TIMED should allow the scientific community to make significant progress toward solving this SEC mystery."

Preliminary TIMED data will be featured in a special session at the Spring 2002 American Geophysical Union meeting, May 31, in Washington, D.C., which is open to the media. Information about this session can be found at http://www.agu.org/meetings/sm02Sessions.html#SA (item SA02). Interested members of the press should visit http://www.agu.org/sci_soc/media.html for registration information.

Since TIMED's science mission began in January 2002, science team members say it has made great strides in helping them learn more about one of Earth's least understood atmospheric regions -- the Mesosphere and Lower Thermosphere/Ionosphere -- a gateway between Earth's environment and space. TIMED is the first of NASA's Solar Terrestrial Probes missions to globally study the influences of the Sun and humans on the MLTI region, located approximately 40-110 miles (60-180 kilometers) above the surface.

"TIMED's study of short-term events, such as the recent solar storms, will help us gain a better understanding of the dynamics of this gateway region," says Dr. Yee. "But our main goal is to understand the region's overall climate through a comprehensive set of global measurements we're collecting using TIMED's 4-instrument suite. With the core data we've already collected, we've taken the first step in assessing the region's global characteristics and seasonal variations, information that will help us establish a baseline for future studies."

Space weather in Earth's upper atmospheric regions can change as suddenly as our weather patterns on the ground. It can affect satellite communications and orbital tracking, spacecraft lifetimes and the reentry of piloted vehicles. "When a change occurs in one region of our atmosphere, it affects other regions," Dr. Yee says. "It's important that we better understand how this gateway region responds to various solar inputs, which affect our atmosphere's overall energy balance."

Images and videos of preliminary TIMED data can be downloaded from http://www.timed.jhuapl.edu/press2/images.htm.

The Solar Terrestrial Probes Program Office at NASA's Goddard Space Flight Center, Greenbelt, Md., oversees the TIMED mission for the Office of Space Science at NASA Headquarters in Washington, D.C. The Johns Hopkins University Applied Physics Laboratory, in Laurel, Md., built and now operates the spacecraft, leads the project's science effort and manages the mission's Science Data Center for NASA.

For more information about TIMED, visit http://www.timed.jhuapl.edu.

The Applied Physics Laboratory, a division of The Johns Hopkins University, meets critical national challenges through the innovative application of science and technology. For more information, visit http://www.jhuapl.edu.


Story Source:

The above story is based on materials provided by Johns Hopkins University. Note: Materials may be edited for content and length.


Cite This Page:

Johns Hopkins University. "NASA Spacecraft Provides Critical Link In Sun-Earth Chain." ScienceDaily. ScienceDaily, 5 June 2002. <www.sciencedaily.com/releases/2002/05/020530072421.htm>.
Johns Hopkins University. (2002, June 5). NASA Spacecraft Provides Critical Link In Sun-Earth Chain. ScienceDaily. Retrieved October 26, 2014 from www.sciencedaily.com/releases/2002/05/020530072421.htm
Johns Hopkins University. "NASA Spacecraft Provides Critical Link In Sun-Earth Chain." ScienceDaily. www.sciencedaily.com/releases/2002/05/020530072421.htm (accessed October 26, 2014).

Share This



More Space & Time News

Sunday, October 26, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Raw: China Launches Moon Orbiter

Raw: China Launches Moon Orbiter

AP (Oct. 24, 2014) China launched an experimental spacecraft Friday to fly around the moon and back to Earth in preparation for the country's first unmanned return trip to the lunar surface. (Oct. 24) Video provided by AP
Powered by NewsLook.com
China Prepares Unmanned Mission To Lunar Orbit

China Prepares Unmanned Mission To Lunar Orbit

Newsy (Oct. 23, 2014) The mission is China's next step toward automated sample-return missions and eventual manned missions to the moon. Video provided by Newsy
Powered by NewsLook.com
Russian Cosmonauts Kick Off Final Spacewalk of 2014

Russian Cosmonauts Kick Off Final Spacewalk of 2014

Reuters - US Online Video (Oct. 22, 2014) Russian cosmonauts Maxim Suraev and Alexander Samokutyaev step outside the International Space Station to perform work on the exterior of the station's Russian module. Rough Cut (no reporter narration) Video provided by Reuters
Powered by NewsLook.com
Comet Siding Spring Grazes Mars' Atmosphere

Comet Siding Spring Grazes Mars' Atmosphere

Newsy (Oct. 19, 2014) A comet from the farthest reaches of the solar system passed extremely close to Mars this weekend, giving astronomers a rare opportunity to study it. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins