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Light-year

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Hence it takes an extremely large telescope to try to spot any planets that may support alien life many light years away.

"With the E-ELT, we believe that we will be able to directly see exoplanets similar to Earth out to a distance of about 20 light years,

The closest potentially habitable planet is about seven light years away, according to the Harvard-Smithsonian Center for Astrophysics in Cambridge, Massachusetts.

alcium-rich transients observed to date can be seen tens of thousands of parsecs away from any potential host galaxy with a third of these events at least 65 thousand light years from a potential host galaxy.

but also relatively close at just 6500 light years away providing an excellent way to study what happens in these stellar explosions. ast year we used the European space agency s Herschel Space observatory to study the intricate network of gas filaments to show how exploding stars are creating huge amounts of space dust. urther measurements

our solar system orbiting a white dwarf star 170 light years away. Using observations obtained with the Hubble Space Telescopeâ

That's a distance of about 4 light years. Now imagine as many as 10000 of our suns crammed into that relatively small space. his galaxy is more massive than any ultra-compact drawfs of comparable sizesays Jay Strader assistant professor of physics

the massive elliptical galaxy NGC 4649 also called M60 about 54 million light years from Earth.

What makes this galaxy dubbed M60-UCD1 so remarkable is that about half of its mass is found within a radius of only about 80 light years.

lies at a comparatively short distance of 190 light years from the Solar system and has been studied by astronomers for more than a century.

These images show the carbon monoxide gas detected in neighbouring galaxies 40 to 600 million light years from Earth in their final stages of merging.

At 11.4 million light years away SN 2014j is the closest such explosion in decades. Eugene Churazov of the Max Planck Institute for Astrophysics in Garching Germany and colleagues observed SN 2014j with the INTEGRAL gamma-ray telescope.

A frigid world about 3000 light years away offers the first evidence that rocky planets can form in Earthlike orbits even

The planet orbits a star that is about 560 light years away from us. It has a radius slightly more than double that of Earth's a size that led astronomers to assume it was a shrunken version of gassy planet Neptune

He and his colleagues modelled a cube of space with sides that stretched to 347 million light years a fraction of the size of the observable universe today.

Located about 22 light years away Gliese 667c is itself part of a triple-star system making this one of the most crowded planetary neighbourhoods yet.

They suggest looking for a neutron star between 3000 and 12000 light years away left over from such a merger.

#Largest structure challenges Einstein's smooth cosmos A collection of galaxies that is a whopping four billion light years long is the biggest cosmic structure ever seen.

and measures roughly one billion light years across (red crosses) so it is dwarfed by Huge-LQG. The discovery of Huge-LQG joins a collection of observations that seem to challenge the cosmological status quo.

Previous calculations gave a value of one billion light years as the maximum possible size of a cluster.

#5 billion light years across: the largest feature in the universe A Hungarian-US team of astronomers have found

a ring of nine gamma ray bursts and hence galaxies-5 billion light years across. The scientists, led by Prof Lajos Balazs of Kokoly Observatory in Budapest,

They appear to be at very similar distances from us around 7 billion light years in a circle 36°across on the sky,

This implies that the ring is more than 5 billion light years across, and according to Prof Balazs there is only a 1 in 20,000 probability of the GRBS being in this distribution by chance.

which sets a theoretical limit of 1. 2 billion light years for the largest structures. The newly discovered ring is almost five times as large.

& Astronomy at Stony Brook University, is one outside earths solar system at 100 light years away.

Astronomers have identified more than 1700 exoplanets some as far as hundreds of light years away. Most were discovered by the traditional transit method

however will be able to detect Doppler shifts as small as 10 centimeters per second--small enough to find habitable zone Earthlike planets even from hundreds of light years away.

700 light years from Earth, and settles the difference in results published in prior studies. The detection and characterization of the rings required the unique capabilities of Chandra the ability to detect fine details combined with sensitivity to faint signals.