Sentences with phrase «distant background galaxies»

This, Livermore notes, is a primary reason why astronomers are interested in these galaxy clusters — the chance to see the distant background galaxies in so much greater detail than Hubble would be able to produce on its own.

It is also possible to use the way the gravity of clusters of galaxies distort more distant background galaxies, weak gravitational lensing, as another tracer.

However, through the phenomenon known as «gravitational lensing,» a massive, foreground cluster of galaxies acts as a natural «zoom lens» in space by magnifying and stretching images of far more distant background galaxies.

Acting as a «natural telescope» in space, the gravity of the extremely massive foreground galaxy cluster MACS J2129 - 0741 magnifies, brightens, and distorts the far - distant background galaxy MACS2129 - 1, shown in the top box.

Not exact matches

Along with the familiar cosmic microwave background — the afterglow of the big bang — the distant universe is suffused with an infrared background, thought to come from galaxies and stars too faint and far away to see.

Foreground galaxy clusters can warp and magnify the light of distant, background proto - galaxies, for instance, allowing cosmologists to catch glimpses of early epochs of the universe.

The gravitational pull of matter in the cluster bends and twists the light from more distant galaxies, producing a plethora of strange optical effects ranging from distorted arcs to multiple images of the same background object.

There are so many distant galaxies that every nearby galaxy is seen against a backdrop of thousands of others, and the image of each background galaxy is distorted just a little bit.

The ideal background «lights» for such a study are quasars, which are very distant bright cores of active galaxies powered by black holes.

The lens also magnifies the background light source, acting as a «natural telescope» that allows astronomers a more detailed look at distant galaxies than is normally possible.

The puzzle first emerged when Rudnick, who had decided to study a large cold spot in the cosmic microwave background, found some strange data in a radio telescope survey of distant galaxies.

The only accurate approach to measure the tangential speed of M31 is to observe proper motion of M31's stars against a background of distant galaxies.

From our perspective on Earth, there will be rare cases where a distant background quasar and a stream of primordial gas near a foreground galaxy are exactly aligned on the night sky.

The thin, glowing streak slicing across this image cuts a lonely figure, with only a few foreground stars and galaxies in the distant background for company.

The image, which shows gas, dust and stars spread across the sky in a disorderly and irregular jumble, also reveals several other, far more distant galaxies that appear as fuzzy shapes in the background.

In this Hubble photograph of a distant galaxy cluster, a spotty blue arc stands out against a background of red galaxies.

AMiBA, a millimeter interferometer like ALMA, was constructed by ASIAA (Academia Sinica Institute of Astronomy and Astrophysics) and National Taiwan University for polarimetry of microwave background radiation and detection of distant clusters of galaxies using the Sunyaev Zeldovich effect.

Numerous distant galaxies are visible in the background.

In the background, many other distant galaxies can be seen (Credit: ESA / Hubble & NASA)

The light of a distant galaxy is re-directed around this core, often producing multiple images of the background galaxy (see the image above for an example).

In the background, many other distant galaxies can be seen