Sentences with phrase «as distant galaxies»

The earth's oceans are not just fragile but forbidding, as difficult to study as distant galaxies.

In fact, though, von Humboldt was not the first to use the term Weltinseln to refer to the nebulae as distant galaxies.

Not exact matches

It would be otiose to give examples: a distant thunder is in the past as much as a distant star; but no matter how far in time - space a star or galaxy is, it is always faintly immanent in my Here - Now even when its action is below the threshold of human perception; its action can be made visible by a combination of lenses or a prolonged photographic exposure.

This means that telescopes act as time machines, allowing astronomers to see galaxies in the distant past.

Astronomers exploit this property of space to use the clusters as a zoom lens to magnify the images of far - more - distant galaxies that otherwise would be too faint to be seen.

When we measure the forces between distant galaxies more accurately, will we find deviations from Newton's laws, as Milgrom suggests?

Because parallax measurements are so difficult to obtain for far - distant star - forming regions on the other side of the galaxy, astronomers widely agree they will chiefly serve as important calibration points to augment existing kinematic distance measurements.

However, such a simple task becomes increasingly hard as astronomers attempt to count the more distant and fainter galaxies.

Sometimes credit didn't come because, as far as we know, he was wrong: his idea that «tired light» and not an expansion of the universe might be the cause of the lengthening of wavelengths from distant galaxies, or his insistence that galaxy clusters didn't belong to superclusters.

As they could reveal themselves in images of distant galaxies, the search is on.

GALACTIC QUARTET The way invisible dark matter warped the light from distant galaxies, shown here as the swirl of material surrounding four giant galaxies in cluster Abell 3827 (seen in this Hubble Space Telescope photograph), suggested that dark matter can separate from stars when galaxies collide.

Peering into the far reaches of the universe, astronomers have spotted seven galaxies so distant that they appear as they did less than 600 million years after the Big Bang.

Guyon adds that the system will help astronomers to study the skies more efficiently, by bringing large objects, such as nearby galaxies, into focus all at once, and by allowing more distant objects to be studied in a single snapshot.

This should allow users to calculate distances to some of the Universe's most remote objects, such as quasars, the luminous cores of distant galaxies containing giant black holes.

The distant galaxy, in glowing orange, is known as SDP.81 and is nearly 12 billion light years away.

«Usually distant galaxies do not change significantly over an astronomer's lifetime, i.e. on a timescale of years or decades,» explains Andrea Merloni, «but this one showed a dramatic variation of its spectrum, as if the central black hole had switched on and off.»

The other method, practised by Riess and his colleagues, measures how distant galaxies appear to recede from us as the universe expands, using stars and supernovae of known brightness to gauge the distance to those galaxies.

(For older, even more distant galaxies, the researchers were not able to see black hole activity as clearly, but they did set upper limits on x-ray luminosity.)

«Follow - up spectroscopic observations are now needed to verify that the object is far more distant than the lensing galaxy, as well as to derive better distance estimates to confirm that multiple images really belong to the same object,» says Ratnatunga.

These gamma - ray bursts, astrophysicists recently learned, originate in distant galaxies and are unfathomably powerful — as much as 10 quadrillion (a one followed by 16 zeros) times as energetic as the sun.

But around the same time studies of very distant galaxies, which we see as they were when the Universe was very young, were setting constraints on the amount of baryonic matter in the Universe (New Scientist, Science, 30 April).

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.

The gravity of this cluster acted as a lens, bending the light from a more distant galaxy behind it and brightening it.

The objects causing these low - frequency ripples — such as orbiting supermassive black holes at the centers of distant galaxies — would be different from the higher frequency ripples, emitted by collisions of much smaller black holes, that have so far been detected on Earth.

Starlight from very distant galaxies takes billions of years to reach Earth, so we see these galaxies as they were billions of years ago.

The distant galaxy, known as SDP.81, forged the equivalent of 315 of our suns each year in an era when star formation was at its maximum in the universe.

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.

And the ones now being found in distant galaxies — such as a November discovery, a planet orbiting star HD 209458 in the constellation Pegasus — are assigned dry strings of numbers and letters.

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.

Observations of the galaxies» spectra suggest they are very distant, appearing as they were when the universe was just 2 to 4 billion years old, less than a third its present age.

«It turns out that the contribution of star - forming galaxies as tracers of the mass distribution in the distant universe is not negligible,» said Dr. Utsumi.

The huge mass of the cluster acts as a cosmic magnifying glass and enlarges even more distant galaxies, so they become bright enough for Hubble to see.

In a new paper submitted to The Astrophysical Journal on 29 November 2013 (available on the ArXiv Preprint Server), a group of astronomers detected a large number of distant, gravitationally lensed galaxy candidates — all viewed through Abell 2744, with the galaxy cluster acting as a lens.

(In the image above the more distant quasar HE 1104 - 1805 is seen as the two larger images on either side of the smaller yet closer lens galaxy [WKK93] G.) The stars in that lens galaxy then act like ultra-high resolution telescopes (see the NASA video).

Much as a teacher would be amazed to enter a preschool classroom full of college - age students, astronomers were thrown for a loop when they found fully formed galaxies in a distant corner of the universe they thought was populated with relatively small, ragged gatherings of stars.

Now, as the newest Star Trek film hits cinemas, the NASA / ESA Hubble space telescope is also exploring new frontiers, observing distant galaxies in the galaxy cluster Abell S1063 as part of the Frontier Fields programme.

An international team of astronomers has found the most distant gravitational lens yet — a galaxy that, as predicted by Albert Einstein's general theory of relativity, deflects and intensifies the light of an even more distant object.

Light is affected by gravity, and light passing a distant galaxy will be deflected as a result.

This is a subtle variant of weak gravitational lensing, in which the light emitted from distant galaxies is slightly warped by the gravitational effect of large amounts of matter, such as galaxy clusters.

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.

They are the locations of bright stars and other nearby objects that get in the way of the observations of more distant galaxies and are hence masked out in these maps as no weak - lensing signal can be measured in these areas.

If a distant galaxy were made of antimatter, it would constantly be producing gamma - rays as it encountered the matter in the intergalactic gas clouds that exist throughout galaxy clusters.

Several ground - based microwave telescopes, such as the South Pole Telescope, are tracking how the structure of very distant galaxy clusters grew in the early Universe under the influence of gravity.

To do so, they used the National Science Foundation's Karl G. Jansky Very Large Array (VLA) and the Atacama Large Millimeter / submillimeter Array (ALMA) to look at distant galaxies seen as they were some 10 billion years ago.

Radio / Optical combination images of distant galaxies as seen with NSF's Very Large Array and NASA's Hubble Space Telescope.

Light from distant galaxies passing through those regions also gets warped, making the galaxies appear streaked and smeared in telescope images, a technique known as weak gravitational lensing.

As a result, light coming from a distant galaxy will be deflected by otherwise invisible globs of dark matter, causing it to appear stretched and deformed.

These extremely young, extremely distant galaxies blast out as much light as the entire Milky Way, all from a core that is a millionth the Milky Way's diameter.

The cosmic optical illusion was due to the mass of a single galaxy within the cluster warping and magnifying the light from the distant stellar explosion in a process known as gravitational lensing [4].

«As we were searching for distant galaxies magnified by Abell 2218, we detected a pair of strikingly similar images whose arrangement and color indicate a very distant object,» explains lead author Jean - Paul Kneib of the California Institute of Technology.