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Jet

Astronomy JanusJet Stream

Jet Propulsion Laboratory (JPL) is a federally funded research and development center and NASA field center located in the San Gabriel Valley area of Los Angeles County, California, United States.

 


Jet streams are fast flowing, narrow air current
Thermal wind
The thermal wind is a vertical shearing in the geostrophic wind Causality by a horizontal temperature gradient.

Jet Propulsion Laboratory
JPL Logo
The JPL complex in Pasadena, Ca. Courtesy NASA/JPL-Caltech.

Jet Streams:
Among the more fascinating features of upper-air circulations are discontinuous bands of relatively strong winds (usually in excess of 30 metres per second) called jet streams.

Jet Stream
References
Chamberlain, J. W. and Hunten, D. M. "Thermal Wind: Jet Stream." §2.2.3 in San Diego: Academic Press, pp. 80-82, 1987.

One jet of a stellar pair located 1,400 light years away in the Orion constellation and collectively known as Herbig-Haro 34, was already well-studied, ...

jet
a narrow stream of gas or particles ejected from an accretion disk surrounding a star or black hole
jet stream ...

Jet
spray of particles produced from the vacuum by the passage of a high momentum quark or gluon. The direction of the jet indicates the direction of the said quark or gluon.
J H K L M N Q ...

Jet Propulsion Lab. NASA's lead center for robot exploration of the Solar System - JPL - managed the Deep Space 1 mission for NASA's Office of Space Science at Washington, D.C.

Jet - A narrow beam of gas ejected from a star or the nucleus of an active galaxy ...

Jet Propulsion Lab -- An outgrowth of the Guggenheim Aeronautical Laboratory of Caltech, in Pasadena (near Los Angeles, California).

JET STREAM
The jet stream is a high-speed wind that is usually found at high altitudes, between 25,000 and 45,000 feet (just below the tropopause).

Jet Propulsion Laboratory, Pasadena, California. Funded by NASA and operated by the California Institute of Technology (Caltech). [McL97]
Jitter
Irregular random variations in a radio signal. [H76]
Jodrell Bank ...

Jet Stream
The Northern Hemisphere Jet Stream can be seen crossing Cape Breton Island in the Maritime Provinces of Eastern Canada.

Jet speed certainly isn't the answer. Imagine traveling by jet to the moon from Earth, about 386,000 km (240,000 miles). A jet traveling at 1,600 km/h (1,000 mph) would take about 240 hours or about 40 days to reach the moon.

jet A highly directed flow of matter, or radiation that comes from such a flow.

A jet is introduced with a perscribed flow speed and an internal magnetic field. The surroundings are at rest and are also permeated by a magnetic field but with a different field strength.

* Jet Propulsion Laboratory awarded contract to Beckman Instruments for design studies on equipment to analyze the surface of the Moon (1961).

The jet from HH-34 in the constellation Vela shows both the 'machine gun'-like bullets of material being shot along the jet (upper right) as well as the interaction between the jet and surrounding interstellar medium (lower left).
Credit: J.

The jet stream is a belt or band of rapidly moving air from 50,000 feet in altitude, or above, crossing the mid-latitudes of the U.S. Actually, there are two jet streams. One in the far northern U.S.

The Jet Propulsion Laboratory designed and developed the Galileo Jupiter orbiter spacecraft and is operating the mission. NASA's Ames Research Center developed the atmospheric probe with Hughes Aircraft Company as prime contractor.

The jet passed through the outer shell of the star and, in conjunction with vigorous winds of newly forged radioactive nickel-56 blowing off the disk inside, shattered the star.

The Jet Propulsion Laboratory's NEO website
Spaceguard UK
The UK NEO Information Centre
Earth in the Cosmic Shooting Gallery Paper published 2005 ...

The jet stream contributes to turbulence both directly through its high velocity movement against lower atmospheric layers, and indirectly through the quantity of cold or moist air it brings from northern latitudes and ocean surfaces, ...

The jet on the top side is about 0.2 light-years from the star at its farthest extent, and is pointed nearly in our direction. The opposite jet on the bottom lies on the farther side of the star.

NASA Jet Propulsion Laboratory (NASA-JPL)
Definition: A solar system consists of a star and all the objects orbiting it as well as all the material in that system.

NASA's Jet Propulsion Laboratory
jpl.nasa.gov
NASA's SpacePlace
spaceplace.nasa.gov ...

Where a jet engine on an airplane obtains its oxidizer for combustion directly from the atmosphere, a rocket carries its own oxidizer and can operate outside the atmosphere. Otherwise, their basic operating principle is the same.

from the Jet Propulsion Lab.
from the Jet Propulsion Lab.
from the "Nine Planets."
from the University of Michigan
by Gary W. Kronk.

[2.4] THE JET PROPULSION LABORATORY
[2.5] VON BRAUN ENLISTS WITH THE AMERICANS
[2.6] SERGEI KOROLYEV & THE BEGINNINGS OF SOVIET ROCKETRY ...

The special jet orientation explains the general peculiar characteristics: high observed luminosity, very rapid variation, high polarization (when compared with non-blazar quasars), ...

Surge. A jet of material from active regions that reaches coronal heights and then either fades or returns into the chromosphere along the trajectory of ascent.

Relativistic Jet Model
An explanation of superluminal expansion based on a high velocity jet from a quasar directed approximately toward the earth.
Relativistic Red Shift ...

Eventually, the jet is slowed and stopped by the intergalactic medium, the flow becomes turbulent, and the magnetic field grows tangled. The result is a giant radio lobe, like those pictured in Figures 25.6"25.

spicules--Fine, jet-like narrow columns of solar material found in the chromosphere that ascend into the corona
sprays--Extremely explosive ejections that take place during a solar flare at high velocities ...

While the nuclear jet is detectable in the image above, a few extra processing steps were needed to display it better.

A geyser shooting a jet of vapor into
space from Saturn's moon Enceladus.

Deep Space Network (NASA Thesaurus) A communications network managed by the Jet Propulsion Laboratory for command and control of all planetary flights.

How to land a jet plane on an aircraft carrier
Domestic Intelligence Collection Fundamentals
Focal Plane Shutter
Hand plane
fundamental forces
The Fundamentals
sea plane
When the dead poets mobilize, they'll paint your picture on their planes ...

This material is not always the conventional jet in an early stage; Barthel has shown that radio galaxies of large projected size (i.e. presumably viewed 90° to the jet axes) can have superluminal motions, ...

Welcome to the Planets from Jet Propulsion Laboratory; direct from "the source"
Exploring the Planets from the National Air and Space Museum
The Solar System by Ken Edgett of Arizona State University
Sol Station ...

The view is from below …[Credit: Jet Propulsion Laboratory/National Aeronautics and Space Administration] ...

(Some but not all Sun-grazing nuclei split under solar tidal forces.) Finally, argued Whipple, the asymmetric vaporization of the nuclear ices sunward produces a jet action opposite to the Sun on the solid cometary nucleus.

If a jet plane were 30 feet from you and it went by it would obviously look like it was moving fast, but when it is 30,000 feet up it appears to be just inching along.

Alternate jet streams of east-west and west-east circulation can be traced in the motions of the cloud tops, the speeds of these jet streams reach speeds of hundreds of metres per second, they are the cause of the banded appearance of the clouds.

Detail of the Triffid Nebula: the thin column pointing to the left is a jet of material emerging from a very young star hidden inside the cloud of gas and dust. The visible part of the jet is about one light year long. (© Hubble Space Telescope).

Using a pressurized-gas, jet-maneuvering device, he spent 21 min in space. While Gemini 6 and 7 were in orbit together in December 1965, they rendezvoused within a few feet of each other. After orbiting for 20 hr, Gemini 6 with Schirra and Maj.

President Bush safely lands in an S-3B Viking jet on the deck of the USS Abraham Lincoln returning from operations in Iraq while 100 miles off the coast of San Diego, California.

Mission specialists and pilots are trained in a T-38 jet in order for them to gain experience in a high-performance aircraft.

The Jet Propulsion Laboratory has a site called The Space Place that has a number of activities geared for elementary school kids (so you teachers or prospective teachers should look it over!).

From it pours a variable jet at nearly the speed of light, making M 87 an "active galaxy" and the core an "active galactic nucleus," or "AGN.

NASA's Jet Propulsion Laboratory took the first astronomical CCD image of Uranus in 1975. Since then the technology has been refined and come to dominate professional astronomical applications of imaging, spectroscopy, photometry and astrometry.

Kuiper, the KAO was a C-141 jet transport that carried its 36-inch (91-cm) telescope to altitudes of up to 45,000 ft (13,720 m).

His golden chariot was pulled by four jet-black horses. While he used the chariot to periodically visit the Upperworld, in order to seduce a beautiful nymph, he rarely wished the relationship to last.

What looks like a green intergalactic monster below the spiral galaxy in this picture is really a big cloud of gas and dust lit up by a jet of energy from a supermassive black hole.

Flight training takes place in the jet aircraft that are designed to perform in the same way as a space shuttle during landing. Candidates also have survival training in case the shuttle has an emergency landing in water or in the wilderness.


GEYSER
A geyser is a jet of hot liquid or gas that shoots from a crack in the crust of a planet or moon.

GIBBOUS MOON
A gibbous moon is between a full moon and a half moon, or between a half moon and a full moon.

A BL Lac object is a radio galaxy aligned so that we are looking down the jet into the very heart of the system, right into the nucleus. Since we are looking right along the jet we see very rapid, highly luminous radiation.

Credits (Left Image): Rodger Thompson, Marcia Rieke, Glenn Schneider, Dean Hines (University of Arizona); Raghvendra Sahai (Jet Propulsion Laboratory); NICMOS Instrument Definition Team, and NASA/AURA/STScI Credits (Right Image): Credits: William B.

Welcome to the Planets is a trademark of the Jet Propulsion Laboratory
of the California Institute of Technology.

See also: Earth, Time, Light, Planet, Sun