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Latest THEMIS Stories

GRAIL on the Launchpad
2011-09-09 06:40:25

  Thursday´s scheduled launch of the Delta II rocket carrying NASA´s Gravity Recovery and Interior Laboratory (GRAIL), which was postponed to Friday morning at 9:16 a.m., has been postponed again until Saturday, September 10. NASA delayed the initial launch due to upper-level winds that may have posed a threat. The space agency said the high winds at Cape Canaveral Air Force Station in Florida prevented a launch opportunity at 8:37 a.m. on Thursday. The agency pushed...

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2011-07-19 11:54:19

Two small NASA probes that had been used to study space weather now are orbiting the moon to study its interior and surface composition. The spacecraft, called Acceleration, Reconnection, Turbulence and Electrodynamics of the Moon's Interaction with the Sun (ARTEMIS), began their journey away from Earth's orbit in July 2009. The first spacecraft entered lunar orbit on June 27, and the second on July 17. Engineers used complex orbit maneuvers to relocate the spacecraft to their new locations....

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2011-07-14 08:10:00

2 probes, repositioned from THEMIS mission, will map surface magnetic fields By Robert Sanders, University of California - Berkeley On Sunday, July 17, the moon will acquire its second new companion in less than a month. That's when the second of two probes built by the University of California, Berkeley, and part of NASA's five-satellite THEMIS mission will drop into a permanent lunar orbit after a meandering, two-year journey from its original orbit around Earth. The first of the two probes...

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2011-05-02 09:39:03

Karen C. Fox, NASA's Goddard Space Flight Center Whether it's a giant solar flare or a beautiful green-blue aurora, just about everything interesting in space weather happens due to a phenomenon called magnetic reconnection. Reconnection occurs when magnetic field lines cross and create a burst of energy. These bursts can be so big they're measured in megatons of TNT. Several spacecraft have already sent back tantalizing data when they happened to witness a magnetic reconnection event in...

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2011-02-01 09:13:54

NASA's Time History of Events and Macroscale Interaction during Substorms (THEMIS) spacecraft combined with computer models have helped track the origin of the energetic particles in Earth's magnetic atmosphere that appear during a kind of space weather called a substorm. Understanding the source of such particles and how they are shuttled through Earth's atmosphere is crucial to better understanding the Sun's complex space weather system and thus protect satellites or even humans in space....

2010-11-22 07:30:00

MINNEAPOLIS, Nov. 22, 2010 /PRNewswire/ -- ATK (NYSE: ATK) and NASA are marking the 10-year anniversary of NASA's Earth Observing-1 (EO-1) satellite. The spacecraft, built by ATK for the Goddard Space Flight Center in Greenbelt, Maryland, had an initial design and mission life of one year, but continues operating today, more than nine years past the initial mission. The EO-1 satellite launched on November 21, 2000. ATK served as the Prime Contractor, Satellite Mission Integrator and Bus...

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2010-10-28 06:30:00

New mission, ARTEMIS, begins science operations in Lagrange-point parking orbit Two micro-satellites originally launched into Earth's orbit in 2007 by NASA have been redirected by University of California, Berkeley, scientists toward new orbits around the moon, extending study of the earth and moon's interaction with the solar wind. The second of the two probes settled into a temporary "Lagrange-point" orbit on Friday, Oct. 22, inaugurating science operations for a new mission dubbed ARTEMIS...

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2010-10-25 06:38:11

Flight Dynamics data from THEMIS-B (one of the two ARTEMIS spacecraft) indicated that one of the EFI (electric field instrument)spherical tip masses may have been struck by a meteoroid at 0605 UT on October 14. All science instruments continue to collect data. The probe and science instruments aboard the spacecraft continue to operate nominally. The upcoming insertion into Lissajous orbit will not be interrupted. ARTEMIS stands for "Acceleration, Reconnection, Turbulence and Electrodynamics...

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2010-07-28 07:10:00

Researchers using NASA's fleet of five THEMIS spacecraft have discovered a form of space weather that packs the punch of an earthquake and plays a key role in sparking bright Northern Lights. They call it "the spacequake." A spacequake is a temblor in Earth's magnetic field. It is felt most strongly in Earth orbit, but is not exclusive to space. The effects can reach all the way down to the surface of Earth itself. "Magnetic reverberations have been detected at ground stations all around the...

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2010-04-29 07:35:00

Scientists using a NASA funded telescope have detected water-ice and carbon-based organic compounds on the surface of an asteroid. The cold hard facts of the discovery of the frosty mixture on one of the asteroid belt's largest occupants, suggests that some asteroids, along with their celestial brethren, comets, were the water carriers for a primordial Earth. The research is published in the April 28 issue of the journal Nature. "For a long time the thinking was that you couldn't find a cup's...


Word of the Day
mundungus
  • A stinking tobacco.
  • Offal; waste animal product; organic matter unfit for consumption.
This word comes from the Spanish 'mondongo,' tripe, entrails.