Earth From Space Before I flew I was already aware of how small and vulnerable our planet is; but only when I saw it from space, in all its ineffable beauty and fragility, ... http://www.solarviews.com/eng/earthsp.htm

 

Earth. The third planet in distance from the Sun. The Earth is the home of mankind. It is a member of the four terrestrial planets of which the inner solar system is composed ... http://www.herts.ac.uk/astro_ub/aE_ub.html

 

Earth Activities and Web Links Earth Activities, Quizzes, and Crafts . . , a quiz on the Earth. : A fill-in-the-blanks activity on Earth ... http://www.enchantedlearning.com/subjects/astronomy/planets/earth/...

 

Earth has a modest magnetic field produced by electric currents generated in its metallic core by its rapid spin, which is distorted into a tear-drop shape by the solar wind ... http://www.solstation.com/stars/earth.htm

 

Earth from Space, from NASA. Pick a small area of the Earth to view from space. NASA's archived photos of Earth from space. Enchanted Learning® Over 15,000 Pages ... http://www.allaboutspace.com/subjects/astronomy/planets/earth/...

 

Earth probably had a primeval atmosphere of carbon dioxide, nitrogen, and water vapor (with small amounts of carbon monoxide, ammonia, and methane). Surface evolution was characterized by differentiation, ... http://scienceworld.wolfram.com/astronomy/Earth.html

 

Earth has a modest magnetic field produced by electric currents in the outer core. The interaction of the , the Earth's magnetic field and the Earth's upper atmosphere causes the (see the ) ... http://www.nineplanets.org/earth.html

 

Earth has only one satellite, the Moon. Interesting gravitational effects between the Earth and Moon result in the tides. The gravitaional interaction also causes the Moon to rotate synchronously, ... http://www.science-park.info/astronomy/earth.html

 

Earth-Moon animation ; ; Clouds over West Europe, North Africa Earthrise over The Moon from Clementine rotating relief globe of Earth Rotating Earth showing ... http://www.star.le.ac.uk/edu/nineplanets/pxearth.html

 

earth, moon and sun to View more cool Space Art by NASA KIDS club members earth, moon and sun by pranav This picture was seen by me in the dream I had a few days ago ... http://kids.msfc.nasa.gov/Gallery/Picture.asp?id=1158

 

The Near Earth Asteroid Tracking Team replies: "Actually, some 100 bodies have already been discovered on orbits which take them so close to the Earth's orbit, that they could hit in the far distant future ... http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/danger.html

 

Earth is the third closest planet to the Sun. It has an made up of many different , but mainly it is nitrogen and oxygen. The atmosphere gives us air to breathe. We live on the planet Earth ... http://starchild.gsfc.nasa.gov/docs/StarChild/solar_system_level1/...

 

Earth formed about 4.5 billion years ago, and it is still evolving. Earthquakes and volcanoes are violent proof of Earth's shifting crust. Beneath this ... http://stardate.org/resources/ssguide/earth.html

 

The Earth - The most famous of the nine planets in the Solar System for obvious reasons - the only planet known to support life. The Earth is the third closest planet to the Sun in our Solar System ... http://www.ridgewayschool.com/subjects/astronomy/Pages/...

 

Earth: Third planet from the Sun Average distance from the Sun: 1 AU (150 million km) Orbital period (Length of Year): 365.26 Earth days Rotational period (Length of Day) ... http://www.unc.edu/depts/mhplanet/Universe/Earth.html

 

Where on earth will the Sun rise earliest by Stephen Daniels April 1, 1999 Abstract Ever wonder where the sun rises first on any given day ... http://www.astronomy.net/articles/19/

 

On Earth, the surface is eroded by the action of water and wind. The most important process for altering the surface of the moon, however, is that of impacting upon and breaking up the surface ... http://pds.jpl.nasa.gov/planets/captions/earth/breccia.htm

 

The Earth is unique amongst the terrestrial planets in having a large satellite, the Moon, which, relative to the Earth, has the largest mass of any satellite - parent system (1 ... http://www.astronomytoday.com/astronomy/earthmoon.html

 

Near Earth Asteroid 2002 NY40 passed just outside of the Moon's orbit in the morning ours of August 18, 2002. The above movie shows its movement among stars of Hercules from 6 ... http://www.astrosurf.com/jwisn/ny40-2.htm

 

Mars and Earth are like two cars on a racetrack as they journey around the Sun. Earth is on the inside track and travels faster than Mars, which is on the outside ... http://hubblesite.org/reference_desk/faq/...

 

Seeking life's earthly cradle Looking for life's origins takes scientists back to the oldest rocks on Earth. Robert Burnham How easy is it to recognize traces of ancient life on Earth ... http://www.astronomy.com/asy/default.aspx?c=a&id=2904

 

Spacecraft views Earth's outer gas shell This is the first ever picture taken from space of the Earth's extended helium atmosphere June 2, 2000 - BBC ... http://www.crystalinks.com/earthspace.html

 

Earthshine. The faint luminosity seen of the night side of the Moon, especially when the Moon appears at a crescent phase. It is caused by light reflected from the Earth onto the Moon ... http://www.delscope.demon.co.uk/astronomy/glossary.htm

 

Earth Our home planet and the third from the Sun. The only planet with abundant water in liquid form and a vast biodiversity. eccentric Often applied to an orbit which is neither circular nor elliptical ... http://www.cascaeducation.ca/files/glossary.html

 

Earthquake: Sudden motion or trembling of Earth caused by the abrupt release of slowly accumulated elastic energy in rocks. Eccentricity: The measure of the degree of elongation of an ellipse ... http://www.psrd.hawaii.edu/PSRDglossary.html

 

Earth's Ionosphere and the Sun The level of activity on the Sun can have a large influence on the Earth's ionosphere, as illustrated in the following animations. Electron Density ... http://csep10.phys.utk.edu/astr162/lect/sun/wind.html

 

An Earth-crossing asteroid (No. 1685) discovered by Wirtanen in 1948 and rediscovered in 1964, of irregular shape (about 5 x 3 km), whose closest approach takes it within 0 ... http://www.angelfire.com/stars5/astroinfo/gloss/t.html

 

Earth at perihelion: closest to Sun for the year, 147.10 million km (0.9833 AU) . January 4 Moon at last quarter 6:46 am NZDT (Jan3, 17:46 UT). January 4 ... http://www.rasnz.org.nz/SolarSys/Jan_05.htm

 

Earth InformationSputnik 1The Face on Mars - Ancient Civilization or Optical IllusionThe Moon - Luna InformationMoon Phases - Yearly Moon Phases Through 2025 Astronomy and Space Online Dictionary and Glossary ... http://space.about.com/od/glossaries/a/glossaryp.htm

 

C. Earth Mass = 1 Earth Mass. Density = 5.5 g/cm3 (Compressed rock and iron). Solar Day = 24 hours. Siderial Day = 23 hours, 56 minutes. Surface temperature = 280K +/- 50K ... http://www.twcac.org/Tutorials/notes(5).htm

 

In earth-rotation aperture synthesis interferometry: an observation which is of such short duration that the Earth's motion does not significantly enhance the u-v coverage, or an image derived from such a brief observation ... http://aips2.aoc.nrao.edu/docs/glossary/s.html

 

The Earth Centered Universe Platform: Windows 3.1 and above Cost: $59.95 Demo: Download Available The Earth Centered Universe is a planetarium and telescope control program for amateur astronomers ... http://www.seasky.org/astronomy/astronomy_software.html

 

The earth, and all living things on it, are constantly bombarded by radiation from space, similar to a steady drizzle of rain. Charged particles from the ... http://www.knowledgerush.com/kr/encyclopedia/Radiation/

 

the earth or a planet that resembles the earth in its physical characteristics. The terrestrial planets in the solar system are the , , , and ; is sometimes also classified as a terrestrial planet ... http://www.question.com/link/terrestr.html

 

"The Earth's Elements" by Robert P. Kirshner, SCIENTIFIC AMERICAN, October 1994, 58:65. "The Reluctant Father Of Black Holes" by Jeremy Bernstein, SCIENTIFIC AMERICAN, June 1996, 80:85 ... http://www.vectorsite.net/tastga9.html

 

The earth will always cast a shadow on the side opposite of the sun. As the earth then orbits the sun, its shadow will sweep around through space. The moon, at the same time, orbits the earth ... http://iaia.essortment.com/solarlunartota_rnxs.htm

 

The Earth's atmosphere absorbs almost all the x-rays that come from space. That's good for life on Earth, because high doses of x-rays are dangerous. But that's bad for astronomers - they have to get above the atmosphere to study x-rays ... http://cas.sdss.org/dr3/en/proj/advanced/skysurveys/rosat.asp

 

The Earth is a very special planet in many ways. Just as Earth's unique atmosphere and its distance from the Sun work together to make Earth the right temperature to support life, work together to create the seasons ... http://www.windows.ucar.edu/tour/link=/the_universe/uts/...

 

R ~ Rearth (a few thousand km) Tsurface = 30000K - 5000K Energy Source: "Cooling Off". A white dwarf star will take billions of years to radiate away its store of thermal energy because of its small surface area ... http://cassfos02.ucsd.edu/public/tutorial/StevI.html

 

EARTH Earth, the fifth largest planet in the solar system, is the only one known to support life. It revolves around the sun in about 365 days. Estimated to be 4.5 billion to 5 billion years old, this planet has one natural satellite, the moon ... http://www.tmclark.com/Starwatch/solarsystem.html

 

1) The Earth does not change its direction of rotation, so the Sun, Moon, stars and planets all rise in the East and set in the West, regardless of whether you are in the Northern or Southern Hemispheres ... http://www.mhhe.com/physsci/astronomy/arny/student/webtutor/...

 

rare earth elements - (n.) series of elements usually taken to include elements with atomic numbers 58 to 71 (lanthanum) and sometimes yttrium and scandium ... http://calspace.ucsd.edu/virtualmuseum/Glossary_Astro/...

 

Point in the earth's orbit where the earth is farthest away from the Sun (summer for us) Apogee Orbital point of greatest distance from the earth Apparent Relative Orbit ... http://www.astronomical.org/portal/modules/wfsection/...

 

Since the Earth will not be in the way, Spitzer will be able to view larger portions of the sky without interruption. Also, there will be less need for Earth-avoidance maneuvers ... http://coolcosmos.ipac.caltech.edu/cosmic_classroom/...

 

Tired of Earth? Visit (1998 JK). See also the world's of "Benson" guitars. NEW in 2004: , a college-level course on audio CD with 100 page study guide from Barnes and Noble, also published as by Recorded Books ... http://www.astro.uiuc.edu/~kaler/sow/..

 

Today the Earth's axis points within one degree of Polaris, the brightest star in the constellation Ursa Minor (also called the Little Bear or the Little Dipper) ... http://ms.essortment.com/northstarastro_rmdz.htm

 

When Earth passes through the Moon's shadow, it is called a solar eclipse. When the Moon passes through Earth's shadow, we are treated to a lunar eclipse ... http://www.dustbunny.com/afk/skywonders/lunareclipse/index.html

 

247.7 Earth years A planetary year is the length of time it takes that planet to revolve around the sun. YELLOW DWARF Yellow dwarfs are small, main sequence stars. The is a yellow dwarf ... http://www.zoomschool.com/subjects/astronomy/glossary/...

 

Compared to earthbound telescopes, the HST is an average sized telescope, yet its capabilities for revealing distant objects in space are much greater than its larger earth bound counterparts ... http://msms.essortment.com/hubblespacetel_rnej.htm

 

TABLE 5. EARTH - SATELLITE DATA No Satellite Average Orbital Inclination Eccentricity Diameter distance(km) period (d) (°) (km) I The Moon 384 400 27.322 18.3 - 28.6 0.055 3 476 TABLE 6. MARS - SATELLITE DATA ... http://www.cyprusastronomy.com/Astronomical%20Tables.html

 

5) The Earth Under Sky Bears Feet (Native American Poems of the Land) $15.95 (hardcover) This I found on the shelf at Barnes and Nobles Book Store. Not Sure What Culture This One is From ... http://www.astro.wisc.edu/~dolan/constellations/extra/...

 

Geocentric Earth-centered. Heliocentric Sun-centered. Inclination abbr i., in the Solar System, the angle between an orbit and the plane of the Earth's orbit (ecliptic) ... http://www.imo.net/glossary.html

 

The tilt of the Earth's axis is not fixed in space. It wobbles slightly, like a spinning top, taking 25600 years to make a full circle. As a result, over this period, several bright stars will be recognised as the Pole Star ... http://www.oregano.demon.co.uk/terms.htm

 

When the Earth passes through the orbital path of a comet, the bits and pieces of ice and dust left behind by the comet will fall to Earth as meteors. These create "showers" of meteors that can occasionally be spectacular ... http://www.iolaks.com/softech/astro/astro2.htm

 

When the earth-moving calamity reached forty days over the earth, the [underground] waters [and rain] together massed high enough [over the surface]to lift the [heavy] ark [where Noah's company was forgiven], ... http://www.winshop.com.au/annew/MB5.htm

 

Right now, the Earth's north axis points toward the Sun in June. But due to presession, 13,000 years from now - a half precession cycle - the Earth's north pole will be pointed away from the Sun in June and toward it in December ... http://www.idialstars.com/vas.htm

 

Deep beneath the earth, he owned all its mineral riches, but his favourite possession was a gift from the Cyclopes: a helmet that rendered him invisible ... http://www.dibonsmith.com/lib_con.htm

 

Objects close to Earth appear to move much more rapidly. For example, you can have students go out and look at a satellite (see for when and where to see satellites in your area) ... http://skyserver.sdss.org/dr2/en/proj/teachers/basic/asteroids/...

 

Because the Earth's axis is precessing (like a spinning top wobbles around), Polaris is only temporarily at the North Pole. In about 14,000 years, will be the North Star and another 14,000 years after that, it will be Polaris again ... http://www.elpasoastronomy.org/constellations/constellations/...

 

31. Stars near the Earth typically are cool M and K dwarf stars. 32. Cepheids are the brightest standard candles (bulbs) of those listed here and can be used to the greatest distance ... http://www.astro.virginia.edu/~jh8h/astr124/exam1.html

 

First artificial Earth satellite, launched by the Soviet Union on 4 October 1957. (lit.: companion) [A84] Squark The supersymmetric partner of any of the quarks. [K2000] SSB Single Side Band [LLM96] ... http://nedwww.ipac.caltech.edu/level5/Glossary/Glossary_S.html

 

The resulting earthquakes, common all over the world, have generally been mild, but prevented the colonists from establishing large structures or concentrated cities, ... http://www.solaris7.com/Planets/PlanetInfo.asp?ID=1111

 

Distance from Earth 5 thousand light years Common Name Lagoon Nebula The Lagoon Nebula is a cluster with nebula which is located in the constellation Sagittarius ... http://www.absoluteastronomy.com/nebulas/lagoon.htm

 

Plate - A section of the Earth's lithosphere pushed about by convective currents within the mantle Plate Tectonics - The hypothesis that the features ... http://www.novac.com/resources/glossary.php

 

which is often a sign of rapid or contin- ued growth in an ACTIVE REGION. ASTRONOMICAL UNIT (AU). The mean earth-sun distance, equal to 1.496E+13cm or 214.94 solar radii. AURORA. A faint visual phenomenon associated with geomagnetic activity, ... http://www.ngdc.noaa.gov/stp/GLOSSARY/glossary.html

 

Dike was supposed to have lived on Earth in the Golden Age of mankind, when Cronus ruled Olympus. It was a time of peace and happiness, a season of perennial spring when food grew without cultivation and humans never grew old ... http://www.ianridpath.com/startales/virgo.htm

 

Geocentric. Centered on the Earth. Geosynchronous. Term applied to any equatorial satellite with an orbital velocity equal to the rotational velocity of the Earth ... http://solar-center.stanford.edu/gloss.html

 

referred to as hard x-rays. Geomagnetic Storm A worldwide disturbance of the Earth's magnetic field, associated with solar activity. Geosynchronous Orbit ... http://hesperia.gsfc.nasa.gov/sftheory/glossary.htm

 

A lunar eclipse occurs when the Moon passes into the Earth's shadow. A solar eclipse occurs when the Sun, the Moon and the Earth are in line, and the Moon hides the Sun from our view. galaxy ... http://www.atnf.csiro.au/education/glossary.html

 

aphelion -- the point in the Earth's orbit that is farthest from the Sun. Currently the Earth reaches aphelion in early July. apogee -- the point in the Moon's orbit that is farthest from the Earth ... http://www.earthview.com/resources/glossary.htm

 

In ancient times the sun was in this constellation at the winter solstice. Due to the precession of the Earth axis, the sun is now in the neighbouring constellation Sagittarius at this time of the year ... http://www.seds.org/Maps/Stars_en/Fig/capricorn.html

 

Namowitz / Spaulding. Earth Science, New York, Perkins, 1997. Schwarzschild, Karl. "Schwarzschild Geometry", File:///A|/schwp.html, 3/14/00. Science Odyssey, The. Part 2, PBS. WNET, New York. 1995 ... http://ks.essortment.com/proofofblackh_rnvy.htm

 

In addition to these exciting Earth-crossing asteroids and their relatives, in recent years scientists have become aware of a second belt of minor bodies, located well beyond the orbit of Neptune ... http://riri.essortment.com/informationaste_roto.htm

 

"Seeing" is the term used by observers for judging the steadiness of the earth's atmosphere. During nights of good seeing the earth's atmosphere is free of air turbulence allowing for steady and sharp stellar and planetary images ... http://www.astrobuysell.com/paul/limit.htm

 

The comet's distance from the Earth in astronomical units. heliocentric distance (r) The comet's distance from the Sun in astronomical units. long-period comets ... http://encke.jpl.nasa.gov/define.html

 

Our understanding of the universe around us has increased exponentially over the course of the past century. A thousand years ago, Earth was the center of the Universe, and the stars were just pinpricks in the firmament ... http://fl.essortment.com/plutocharonmoo_rmgd.htm

 

A Meteor is a small particle of space dust that, while going around the Sun, enters the Earth's atmosphere. When these particles of dust enter the atmosphere, they head up rapidly causing them to glow brightly ... http://me.essortment.com/leonidsmeteors_rcha.htm

 

The distance from the earth to the sun is about 93,000,000 miles. This distance is used for a standard for measurements within our solar system and called an astronomical unit or AU ... http://lala.essortment.com/spacedistance_mig.htm

 

the sky using these pattern, you can tell the season, the location of the earth, and even the tilt of the earth axis with respect to the sun. Sources ... http://ndnd.essortment.com/orionconstellat_reuy.htm

 

Recent evidence points to a spinning motion in the Spot that can be measured from Earth. Scientists have narrowed this time period to a 90-day oscillation pattern, and they are watching the storm accordingly ... http://ky.essortment.com/jupiterstorms_rgbp.htm

 

Think of the tiniest chunk of instant coffee (grain of sand size) hitting the earth’s atmosphere at about 70 kilometers per second and burning up. Meteoroids are dust particles left from comets as they come close to the sun ... http://azaz.essortment.com/nextmeteorshow_rosg.htm

 

Despite the small number of astronomy majors, if you took a survey you'd find that science, Earth science, and engineering majors dominate among active club members. On the other hand, the club includes people from a great variety of other fields ... http://webpub.allegheny.edu/employee/d/doneal/articles/...

 

The stars revolve around one another with a period of 177.75 years. As seen from Earth they are currently closing together. By the year 2000 AD it will require telescopes with an aperture of 100mm to split them ... http://www.maa.mhn.de/Maps/Stars_en/Fig/virgo.html

They typically measure a mere 30-50 kilometers in diameter with a mass greater than the mass of Earth. Pulsars are neutron stars that rotate rapidly and have very large magnetic fields ... http://papa.essortment.com/stellarevolutio_rnqh.htm

This is the only (almost) completely foolproof technique for distances, since we know the size of the Earth's orbit well. Statistical applications can be applied to whole groups of stars, ... http://www.astr.ua.edu/keel/galaxies/distance.html

 

physical and orbital characteristics of the planets. Radius Measured in terms of Earth radius Mass Measured in terms of Earth mass (Sidereal) Rotational Period ... http://www.obliquity.com/skyeye/misc/planet.html

 

People were aware of the fact that as one moved eastward or westward this would change. Whether they believed that the Earth was rotating around its axis or that the Sun was revolving around the Earth, ... http://www.sky-watch.com/articles/ut.html

 

Moon craters Messier and Messier A, as seen on an Earth-bound image of the Full Moon, taken with the 0.9-meter telescope of Kitt Peak National Observatory near Tucson, Arizona. : T.A.Rector, I.P.Dell'Antonio/NOAO/AURA/NSF (N.A. Sharp) ... http://www.obspm.fr/messier/xtra/m-crater.html

 

the Lyrids were largely ignored until the 1880s. In Vienna, Edward Weiss was busy calculating near misses between the earth and the orbits of comets. He found that the orbit of comet Thatcher came within 186, ... http://ksks.essortment.com/meteorshowersl_rmmu.htm

 

He was so skilled at hunting that he boasted that he could kill every animal on the Earth. The goddess of the earth, Gaia, was so offended by his boast she sent a tiny scorpion to stop him ... http://www.pa.msu.edu/people/horvatin/Astronomy_Facts/...

 

in highly directed beams. As these beams sweep across the direction of the earth, radio telescopes pick them up as a repeating signal. The radio emission ... http://web.haystack.mit.edu/urei/tut8.html