Quantcast

Latest Jets Stories

Cassini Sees Seasonal Plasma Changes On Saturn
2013-05-03 19:11:31

Lee Rannals for redOrbit.com — Your Universe Online NASA's Cassini spacecraft has helped shed light on one way the bubble of charged particles around Saturn changes with the planet's seasons. Earth has a magnetosphere like Saturn, and the latest results may help scientists better understand variations in it and the Van Allen radiation belts, which both affect things from space flight safety to satellite and cell phone communications. Researchers wrote in the Journal of Geophysical...

Cyclone Zane Bearing Down On Queensland, Australia Seen By NASA
2013-05-01 15:13:28

NASA/Goddard Space Flight Center NASA's Aqua satellite captured an image of Cyclone Zane headed toward the northern Cape York Peninsula of Queensland where it is expected to make landfall by May 2 and cross into the Gulf of Carpentaria. A cyclone Warning is in effect for coastal areas from Mapoon to Cape York to Cape Flattery. NASA's Aqua satellite passed over Zane on May 1 at 04:05 UTC (12:05 a.m. EDT) and the Moderate Resolution Imaging Spectroradiometer instrument captured a...

NASA Wind Discovers SLAMS Magnetic Waves
2013-04-17 11:48:16

redOrbit Staff & Wire Reports - Your Universe Online Analysis of data collected by NASA´s Wind spacecraft as it traveled through the front of the Earth´s magnetosphere from 1998 through 2002 has revealed a special type of magnetic pulsations, scientists from the US space agency revealed on Tuesday. The magnetosphere, a giant area of space created by the Earth´s magnetic fields as it travels around the sun, produces a standing bow wave or bow shock as is travels...

Aurora Illuminates Sky Near Tromsø, Norway
2013-04-15 10:19:28

ESA These colorful displays are produced when electrically charged particles traveling from the Sun in the solar wind are channeled along Earth´s magnetic field lines and strike atoms high in the atmosphere. Collisions with oxygen atoms typically generate green aurora, as seen here. The link between auroras and solar activity has been apparent for centuries, but only with the aid of satellites can scientists begin to decipher the physical mechanisms causing this spectacular...

NASA's MAVEN Spacecraft Designed To Study Mars' Magnetic Field
2013-03-27 14:43:06

WATCH VIDEO: [NASA | MAVEN Magnetometer] Lee Rannals for redOrbit.com — Your Universe Online NASA's MAVEN spacecraft is scheduled for launch later this year, and with it will launch an instrument designed to study Mars' magnetic field. The Mars Atmosphere and Volatile Evolution (MAVEN) mission will be carrying a sensitive magnetic-field instrument that will help investigate what remains of Mars' magnetic "shield." This Maven magnetometer will be playing a key role in studying...

2013-03-19 09:57:55

On March 17, 2013, MESSENGER successfully completed its year-long first extended mission in orbit about Mercury, building on the groundbreaking scientific results from its earlier primary mission. Today the team is poised to embark on a second extended mission that promises to provide new observations of Mercury's surface and interior at unprecedented spatial resolution and of the planet's dynamic magnetosphere and exosphere at high time resolution during the peak and declining phase of the...

Astronomers Discover Solar Wind Energy Source
2013-03-08 12:36:32

NASA Science Using data from an aging NASA spacecraft, researchers have found signs of an energy source in the solar wind that has caught the attention of fusion researchers. NASA will be able to test the theory later this decade when it sends a new probe into the sun for a closer look. The discovery was made by a group of astronomers trying to solve a decades-old mystery: What heats and accelerates the solar wind? The solar wind is a hot and fast flow of magnetized gas that streams...

Using Black Hole Disks And Jets To Explore The Limits Of Spacetime
2013-02-22 10:37:51

Watch the video "Magneto-Spin Alignment Effect Movie (Black Hole Jet)" April Flowers for redOrbit.com - Your Universe Online Black holes are voracious monsters at the center of galaxies that shape the growth and death of the stars around them with their tremendous gravitational pull and explosive ejections of energy.  "Over its lifetime, a black hole can release more energy than all the stars in a galaxy combined," explains“¯Roger Blandford, Stanford professor,...

Understanding The Magnetosphere Better Than Ever With Help From THEMIS
2013-02-20 10:47:18

NASA On Earth, scientists can observe weather patterns, and more importantly can predict them, through the use of tens of thousands of weather observatories scattered around the globe. Up in the space surrounding Earth -- a space that seethes with its own space weather made of speeding charged particles and constantly changing magnetic fields that can impact satellites — there are only a handful of spacecraft to watch for solar and magnetic storms. The number of observatories has...

Tropical Cyclone 15S Forms In The Southern Indian Ocean Seen by NASA
2013-02-12 10:21:43

NASA The fifteenth tropical cyclone of the Southern Indian Ocean season strengthened into a tropical storm today, Feb. 11, and NASA's Aqua satellite passed overhead hours after it reached tropical storm strength. Tropical Cyclone 15S was born from the low pressure area designated as System 92S. System 92S developed on Feb. 9 and intensified into a tropical storm on Feb. 11 at 0300 UTC. At that time, Tropical Cyclone 15S had maximum sustained winds near 35 knots (40.2 mph/64.8 kph),...


Latest Jets Reference Libraries

Ring Current
2004-10-19 04:45:44

Ring Current -- A ring current is an electric current carried by charged particles trapped in a planet's magnetosphere. It is caused by the longitudinal drift of energetic (10-200 keV) particles. Earth's Ring Current Earth's ring current is responsible for geomagnetic storms. The ring current system consists of a band, at a distance of 3-5 RE(1), which lies in the equatorial plane and circulates clockwise around the Earth (when viewed from the north). The particles of this region...

6_c74ddf89e1e986e7de2e5e2451d6b60b2
2004-10-19 04:45:41

Microquasar -- Microquasars are smaller cousins of quasars. They are named after quasars, as they have some common characteristics: strong and variable radio emission often seen as radio jets, and an accretion disk surrounding a black hole. In quasars, the black hole is supermassive (millions of solar masses) as in microquasars, the black hole mass is a few solar masses. In microquasars, the accreted mass comes from a normal star and the accretion disk is very luminous in optical regions...

6_7a298dad9db3084ba8f1dbe9ba6be2442
2004-10-19 04:45:41

Aurora -- The Polar Aurora are natural displays of light in the sky that can be seen with the unaided eye only at night. An auroral display in the Northern Hemisphere is called the aurora borealis, or the northern lights; in the Southern Hemisphere it is called the aurora australis. Auroras are the most visible effect of the sun's activity on the earth's atmosphere. The beautiful and often eerie curtains of light in the night time sky have been observed by people for millennia. An aurora...

4_58d180de6d0f28286cf3bc85a49cb91c2
2004-10-19 04:45:41

Van Allen Radiation Belt -- The Van Allen radiation belt is a torus of energetic charged particles around Earth, trapped by Earth's magnetic field. The presence of a radiation belt had been theorized prior to the Space Age and the belt's presence was confirmed by the Explorer I on January 31, 1958 and Explorer III missions, under Doctor James Van Allen. The trapped radiation was first mapped out by Explorer IV and Pioneer III. Qualitatively, it is useful to view this belt as consisting...

4_d3a853c28ff70a676427cf8e42fced4f2
2004-10-19 04:45:41

Solar Wind -- Solar wind, a stream of particles (mostly high-energy protons ~ 500 Kev) that is continually ejected from the surface of the Sun. The composition of this plasma is identical to the Sun's corona, 73% hydrogen and 25% helium with the remainder as trace impurities, and is ionized. Near Earth, the velocity of the solar wind varies from 200km/s-889km/s. The average is 450 km/s. Approximately 3000 tons of material is lost from the Sun every hour as solar wind. Since solar...

More Articles (6 articles) »
Word of the Day
toccata
  • In music, a work for a keyboard-instrument, like the pianoforte or organ, originally intended to utilize and display varieties of touch: but the term has been extended so as to include many irregular works, similar to the prelude, the fantasia, and the improvisation.
This word is Italian in origin, coming from the feminine past participle of 'toccare,' to touch.
Related