How To Use Light-year In A Sentence
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The average separation between the stars at its centre is no more than a tenth of a light-year.
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Based on the nebula's distance of 650 light-years, its angular size corresponds to a huge ring with a diameter of nearly three light-years.
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Since its launch last June, NASA's Fermi Gamma-ray Space Telescope has discovered a new class of pulsars, probed gamma-ray bursts and watched flaring jets in galaxies billions of light-years away.
Tew's Day!
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The distance can be expressed in light-years.
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The blue shift was discernible on scales of 100 million light-years, or roughly one-hundredth the scale of previous studies.
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This newly discovered planet orbits a star called Tau Gruis, which is about 100 light-years away.
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The expansion rate became known as the Hubble constant; Hubble thought it was 500 kilometers per second every 3.26 million light-years, that is, every megaparsec.
A Grand and Bold Thing
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“We are back in position as ordered, three parsecs out of Mu Arae, within one light-year of the border.”
Star Trek: Myriad Universes: Shattered Light
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A supernova within 100 light-years of the Earth would likely be a catastrophic event for our planet, but something as far out as T Pyxidis may or may not damage the Earth.
Could A Faraway Supernova Threaten Earth? | Universe Today
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Their absolute magnitude is that of their appearance at 10 parsecs, or 32.6 light-years.
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Variable star V838 Monocerotis lies near the edge of our Milky Way Galaxy, about 20,000 light-years from the Sun.
Picture of the Day
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Those ejections form plumes of searing plasma hundreds of thousands of light-years long.
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By 2011 debris in the center of the ring, which is about a light-year in diameter, was blazing more intensely as the supernova entered a new stage of stellar demise.
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Big, beautiful spiral galaxy NGC 1055 is a dominant member of a small galaxy group a mere 60 million light-years away toward the intimidating constellation Cetus.
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Only 11 million light-years away, Centaurus A is the closest active galaxy to planet Earth.
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And they are only about 2.5 million light-years apart, barely a stone's throw in intergalactic terms.
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None of those planets are like Gliese 581 g, a rocky world about three times the mass of Earth orbiting -- along with five sibling planets -- a red dwarf star 20 light-year from Earth.
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It is the brightest of the three galactic mergers closest to Earth, about 250 million light-years away in the constellation of Serpens , the Serpent.
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This region, about 8000 light-years from Earth, is located near to the famous explosive variable star Eta Carinae, which lies just outside the field of view toward the upper right.
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There's a theory of extradimensionality that holds that there are parallel universes as little as a mere .1 mm away from our own, but owing to the dimensions of our own universe (that is to say, it is folded over on itself like a sort of endless ribbon - think "tesseract" from "A Wrinkle in Time"), we are billions of light-years away from the next nearest universe, as the crow flies.
Saru-san Diary Entry
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Perhaps the original spiral nebula, M51 is a large galaxy, over 60, 000 light-years across, with a readily apparent spiral structure.
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Currently, most astronomers agree that the value of the Hubble constant is about 71 kilometers per second per megaparsec a megaparsec is 3.2 million light-years.
The Big Honkin’ Universe « UDreamOfJanie
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The star, called R136a1, was discovered in the Tarantula Nebula, left, a sprawling cloud of gas and dust in the Large Magellanic Cloud, a galaxy about 165,000 light-years away from our own Milky Way.
The Biggest Star
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But even the new 'synchro'-pilot was only reliable within transition ranges which did not exceed 10 light-years.
Mystery of the Anti
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The top sources within our galaxy include the sun; a star system known as LSI +61 303, which pairs a massive normal star with a superdense neutron star; PSR J1836+5925, which is one of many new pulsars, a type of spinning neutron star that emits gamma-ray beams; and the globular cluster 47 Tucanae, a sphere of ancient stars 15,000 light-years away.
PhysOrg.com - latest science and technology news stories
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They disappeared in rapid succession, to rematerialise almost a light-year away on board the Drusus.
Ernst Ellert Returns
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So much information flowing from across the light-years, how can this weary old noggle hold it without data flowing back out like ear wax?
The Earth Book of Stormgate
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Well, Arcturus, which is a bright star, is 36 light-years away, if I remember correctly.
Never Change
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It has a so-called redshift of 6.29, which translates to a distance of about 13 billion light-years from Earth.
Cosmic Violence
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The other object is SN 2007gr, which was first detected in August 2007 in the spiral galaxy NGC 1058, some 35 million light-years away it's one of the closest Ic supernovae detected in the radio waveband.
GRB Central Engines Observed in Nearby Supernovae? | Universe Today
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The galaxy cluster, known as SPT-CL J0546-5345, is so far away that its glow takes 7 billion light-years to reach us.
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Astronomers have discovered the largest and oldest mass of water ever detected in the universe - a gigantic, 12-billion-year-old cloud harboring 140 trillion times more water than all of Earth's oceans combined. supermassive black hole called a quasar located 12 billion light-years from Earth.
Yahoo! News: Business - Opinion
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Considered 33 years later, that ad was light-years ahead of its time.
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The signal, which was buried in archived studies of a pair of small nearby galaxies called the Magellanic Clouds, was extremely strong and so oddly skewed that scientists believe it emanated from a cosmic event that took place about three billion light-years from Earth.
Cosmic Ghost Leaves Radio Footprint | Impact Lab
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“Hera is the third planet of 492 Lyncis, a class G-2 subdwarf star approximately twelve hundred and seventeen light-years from Earth,” Data said.
Infiltrator
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Bosonic Ashurs had returned from their mastery of the dark light-years, seeking ascendance over all... and were subdued by the mesonic Kanjurs, who in turn were defeated by the Devas--patterned from integral quarks.
Roberson's Book Report
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The nebula is nearly 50 light-years in diameter, and may owe much of its illumination to Deneb.
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What is wrong with this man that he can't keep up with people like Ron Paul, who is a year older than him and light-years away from mainstream Republican philosophy, or Chris Dodd, who has yet to break 1 percent in any Democratic primary poll except in his own state of Connecticut, where the last public poll gave him 6 percent (for Dodd, I blame this on the bouffant, which is the wrong color and shape, although the texture is appropriately sticky -- a fly was recently trapped on its surface).
Paul Jenkins: McCain: Broke-Ass Senator
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If that much it true then I don't think it would be such to leap to assume that our solar system may be "quarantined" because of some "prime directive" thanks, again Star Trek and we may be prevented from being contacted...or we're so backward and violent that more civilized cultures wouldn't be bothered touch us with a ten light-year pole.
VOTD: Neill Blomkamp’s TED Talk: Life On Other Planets and the Future of Human Civilization | /Film
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The distance estimate to T Pyxidis, revised to 3,260 light-years from the previously estimated distance of 6,000 light-years has prompted a reconsideration of the details about the white dwarf.
Could A Faraway Supernova Threaten Earth? | Universe Today
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The images captured in early February depict a distant red giant star called V838 Monocerotis, located about 20,000 light-years from Earth.
Hubble Captures a Starry Night
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A satellite galaxy of the Milky Way, the Small Magellanic Cloud (SMC) is a wonder of the southern sky, a mere 210,000 light-years distant in the constellation of the Toucan.
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Altair, at a distance of 17 light-years, is one of the closest of the bright stars.
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Identified as E0102-72, the supernova remnant lies about 190,000 light-years away in our neighboring galaxy, the Small Magellanic Cloud.
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The signal, which was buried in archived studies of a pair of small nearby galaxies called the Magellanic Clouds, was extremely strong and so oddly skewed that scientists believe it emanated from a cosmic event that took place about three billion light-years from Earth.
Cosmic Ghost Leaves Radio Footprint | Impact Lab
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The Pleiades are approximately 440 light-years away and the Hyades are about one-third that distance: 150 light-years.
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This newly discovered planet orbits a star called Tau Gruis, which is about 100 light-years away.
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But cosmologists are so comfortable with millions and billions that none of them feel the urge to invent a unit much beyond the light-year or the parsec.
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NGC 3521, which is 35 million light-years away in the constellation Leo, is called a flocculent spiral galaxy because of the patchy, woolly look of its spiral arms.
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However, now pushing 60, a twilight-years philosophy is creeping into the Lemmster's previously incorrigible worldview, with takes on death and environmentalism.
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Astronomers studying T Chamaeleontis (T Cha), a faint star 350 light-years from Earth in the southern constellation of Chamaeleon, detected a large gap in a disc of material around the star.
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NASA's Spitzer Space Telescope studied a nearby bright star called Eta Corvi, which is located approximately 60 light-years away in the northern sky, and found signs that comets could be pelting the alien system.
Yahoo! News: Business - Opinion
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The star-strewn void disappeared in an instant and with it the Burma, only to rematerialise in normal space many light-years distant.
Unleashed Powers
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Also known as Keenan's system (for its discoverer) and Arp 104, the interacting galaxy pair is some 17 million light-years away in the constellation Ursa Major.
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Both galaxies are spirals of roughly the same age, with stars strewn across flattened disks of roughly the same size, more than 100,000 light-years across.