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Hubble Catches Glimpse of Rare Class of Galaxies

The way galaxies transform from the pinwheel-shaped spirals – that tend to be blue or reddish – to the egg-shaped ellipticals was unknown to astronomers up until Hubble decided to send back a new set of pictures, detailing extremely rare red spiral galaxies, which experts now think may be the missing link between the two main classes. This discovery could potentially shed some light on the way galaxies evolve over the course of their enormously long life.

X-ray survey reveals differences between near and far galaxies

An ongoing X-ray survey undertaken by NASA’’s Swift spacecraft is revealing differences between nearby active galaxies and those located about halfway across the universe.near-and-far-galaxies-300x216 X-ray survey reveals differences between near and far galaxies

Black Holes Lead Galaxy Growth

The AAS meeting in San Diego is producing lots of news on the astronomy front. Studying galaxies that were forming in the universe's first billion years, astronomers have solved a longstanding cosmic chicken-and-egg problem: which forms first, galaxies or the black holes at their cores? "'We finally have been able to measure black-hole and bulge masses in several galaxies seen as they were in the first billion years after the Big Bang, and the evidence suggests that the constant ratio seen nearby may not hold in the early Universe. The black holes in these young galaxies are much more massive compared to the bulges than those seen in the nearby Universe,"' said Fabian Walter of the Max-Planck Institute for Radioastronomy in Germany. 'The implication is that the black holes started growing first.

Black holes grew up before galaxies

Four galaxies in the early universe have been found that violate a previously observed relationship between the mass of a galaxy and that of the colossal black hole at its centre. The find suggests that supermassive black holes may have matured long before the galaxies that surround them instead of growing in lockstep with each other.

Study: Black holes seem to form before galaxies

When galaxies initially formed, they weren't the first in the cosmic neighborhood. The supermassive black holes, which reside at the center of galaxies, probably moved in first, a new astronomy study suggests.

Black Holes Sprout Galaxies, Not Vice Versa

Astronomers think they have finally solved the cosmic chicken-and-egg problem of what came first—the giant black holes lying at the center of many big galaxies or the galaxies that feed them? The answer: the black holes.

Black holes predate galaxies scientists say, solving age-old riddle

Black holes found at the center of galaxies around the cosmos seem to have appeared first not the other way around, scientists say, solving an age-old riddle which long has dogged astronomers. Skip related content

Black Holes Preceded Galaxies, Discovery Suggests

Astronomers may have solved a cosmic chicken-and-the-egg problem: Which came first — galaxies or the supermassive black holes in their cores?

Spacecraft Shows Active Galaxies Are Different Near And Far

An ongoing X-ray survey undertaken by NASA's Swift spacecraft is revealing differences between nearby active galaxies and those located about halfway across the universe. Understanding these differences will help clarify the relationship between a galaxy and its central black hole.

Black holes sprout galaxies, not vice versa

A view of the neighboring Andromeda galaxy. Researchers weighed the black hole at the center of a given galaxy as compared to the galaxy's "bulge," stars and gas located relatively close to its center. Younger galaxies had different weight ratios than older ones.

Black holes older than galaxies

Washington - Black holes - those massive, invisible objects that suck in everything around them - may have appeared before the galaxies that host them, astronomers said on Wednesday.

Monster Black Holes Spawned Early Galaxies

The discovery could solve the cosmic chicken-and-egg riddle of which came first—galaxies or the supermassive black holes nestled in their cores.

Black holes came before galaxies, say scientists

London, Jan 7 : In a new research, a team of scientists has claimed to have solved a cosmic chicken-ad-egg problem, by concluding that black holes came before galaxies.

CORRECTED: Black holes may precede galaxies, astronomers say

WASHINGTON (Reuters) - Black holes -- those massive, invisible objects that suck in everything around them -- may have appeared before the galaxies that host them, astronomers said on Wednesday.

Which came first, black holes or galaxies?

LONG BEACH, Calif. - Astronomers may have solved a cosmic chicken-and-the-egg problem: Which came first — galaxies or the supermassive black holes in their cores?

Scientists to throw light on how galaxies formed in the early Universe

UK scientists, led by Dr Mark Lacy who is soon to join the University of Southampton, have been successful in obtaining one of the largest-ever awards of observing time on a space-based observatory - a total of 1400 hours on NASA's Spitzer Space Telescope. The observing time will be used to obtain a complete picture of how galaxies formed and evolved in the early Universe.

X-ray survey reveals differences between near and far galaxies

An ongoing X-ray survey undertaken by NASA's Swift spacecraft is revealing differences between nearby active galaxies and those located about halfway across the universe.

Galactic Halfway House Discovered

These images of three galaxies from the Galaxy Zoo (top) and STAGES surveys (bottom) show examples of how the newly discovered population of red spiral galaxies on the outskirts of crowded regions in the Universe may be a missing link in our understanding of galaxy evolution. Credit: STAGES/HUBBLE/COMBO-17/SDSS

Striking a delicate, cosmic balance

Gravitation tends to reduce distances between objects with mass, whereas cosmic expansion tends to increase distances. But the diameter of galaxies, for example, remains constant. So, at what scale does cosmic expansion start dominating gravitation? Can we assert, for example, that our local galaxy cluster will remain unaffected and that cosmic expansion will only make very distant galaxies disappear from our sky? Daniel, Menerville, France

Which came first: galaxies or black holes?

Cosmic history: Part of the Very Large Array radio observatory in New Mexico, used to make the discovery.

Dark energy is stifling galaxies in universe

The same mysterious force that is speeding up the expansion of the universe is also stunting the growth of the objects inside it, astronomers said this week.

NASA satellite reveals active galaxies are different near and far

Until this survey, astronomers could never be sure they were seeing most of the active galactic nuclei.

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