Tag: Galaxies

Synchronized Dance Of Dwarf Galaxies Challenges Chaotic Dark Matter Cosmology

Astronomers assumed that only the Milky Way and the Andromeda galaxies are surrounded by dwarf galaxies moving in an orderly manner. Recently, they discovered a more distant neighbor that raised questions against existing cosmological theories.

Space February 2, 2018

Overabundance Of Massive Stars Could Explain Evolution Of The Universe

Massive stars up to 300 times larger than the Sun were proven to actually exist and more than a thousand of them were recently found along the Tarantula Nebula. With this discovery, astronomers could be one step closer to discovering the origin of the Universe.

Space January 5, 2018

Cosmic Microwave Background From Big Bang Helps Resolve Missing Baryon Problem

Two groups of scientists have found the missing baryons in hot filaments of gas that link galaxies together. Here's how they found these by taking advantage of the Sunyaev-Zel'dovich effect.

Space October 11, 2017

Fastest Stars In Milky Way Are Galactic Fugitives That May Reveal Secrets Of Dark Matter And Our Galaxy

Hypervelocity stars in the Milky Way are likely fugitives from a neighboring galaxy. These fast-moving objects have traveled great distances they may unveil secrets of dark matter and the Sagittarius A black hole.

Space July 7, 2017

NASA’s Hubble Telescope Spots Distant Galaxies That May Need Guarding

A newly released image from NASA Hubble telescope reveals that a huge cluster of galaxies called Abell 370, has an array of galaxies guarding it and is useful in studying far-flung galaxies by its gravitational lensing property.

Space May 5, 2017

Image Confirms Invisible Dark Matter Connects Galaxies In The Universe

A combined image of more than 23,000 galaxy pairs suggests that dark matter exists. It also confirms galaxies are connected together through a cosmic web of the invisible substance.

Space April 15, 2017

Astronomers Capture First Image Of Elusive Dark Matter

Researchers at the University of Waterloo have captured a composite image of the elusive dark matter for the first time. The mysterious matter’s image has the face of a ghost and teased out by gravitational lensing method.

Space April 14, 2017

Dark Matter Was Minor Ingredient Of Galaxies In Early Universe

Using instruments of the Very Large Telescope in Chile, astronomers found evidence that dark matter played a minor role in early galaxies. What were their observations?

Space March 16, 2017

New Dark Matter Map Offers Insight Into Cold Particles

Astronomers successfully mapped out the distribution of dark matter in three galaxy clusters, thanks to data from NASA’s Hubble Space Telescope. These dark matter maps offered scientists insight into the existence of cold dark matter particles.

Space March 2, 2017

Stars Are Ripped Apart By Black Holes 100 Times More Often Than Previously Thought

Supermassive black holes rip stars apart 100 times more often than previously thought in a cosmic event known as Tidal Disruptive Events (TDEs). TDEs are useful to locate supermassive black holes that will aid in the study of their strong gravity.

Space February 28, 2017

What Is This Extragalactic Void Pushing The Milky Way, Other Galaxies Across The Universe?

New evidence points to the extragalactic void called the Dipole Repeller as the likely key for shifting galaxies, with researchers hypothesizing that the two points are controlling the group of galaxies’ movement. There's also a push-and-pull motion happening around our galactic neighborhoods, the study says.

Space January 31, 2017

The Universe Is Expanding Faster Than Expected: Here’s New Proof

Astronomers led by Sherry Suyu of the Max Planck Institute in Germany have found that the universe is expanding faster than expected. They updated the Hubble Constant to a higher rate at 44.7 miles per second per megaparsec.

Space January 28, 2017

Vera Rubin, Astronomer Who Confirmed Dark Matter Existence, Dies At 88

Vera Rubin, the famous astronomer who proved the existence of dark matter, died on Dec. 25 at the age of 88 in a Princeton hospital. Rubin’s pioneering contribution on “black matter” studies had been path breaking and made it one of the cardinal principles of the universe.

Space December 27, 2016

Astronomers Discover Universe’s Biggest Galaxy Supercluster Near The Milky Way

Vela supercluster, one of the biggest super cluster of galaxies, has been found near the Milky Way by a team of international astronomers. Remaining undetected, Vela had been exerting a strong influence on the Milky Way’s speed and direction.

Space December 25, 2016

World’s Largest Digital Sky Survey Releases Catalog Of 3 Billion Scanned Objects In The Milky Way

The world's largest digital sky survey has been released. Known as Pan-STARRS project, the survey offers extensive information on 3 billion stars, galaxies and other objects for the public.

Space December 22, 2016

There Are 10 Times More Galaxies In The Observable Universe Than Originally Thought

The open observable universe might contain at least 10 times more galaxies than initially thought, according to a new study. A team of researchers from the UK said this and explained the reasons why such galaxies are invisible to the human eye.

Space October 15, 2016

Dragonfly 44 Galaxy Is Made Up Of 99.99 Percent Dark Matter: How This Discovery Changes Everything

Known as the Milky Way's 'dark twin,' the Dragonfly 44 galaxy is special because it contains 99.99 percent dark matter. The galaxy is also changing what scientists thought they understood about this substance and the formation of galaxies.

Space August 28, 2016

NASA's Hubble Space Telescope Finds Two Dwarf Galaxies Migrating To Cosmic Big City

Two dwarf galaxies that spent most of their existence in the Local Void are migrating to a cosmic big city. Scientists expect Pisces A and B will grow rapidly and produce many stars in their new environment.

Space August 15, 2016

Largest 3D Universe Map Validates Einstein's Dark Energy Theory, Features 1.2 Million Galaxies

The largest 3D map of the universe, which validates Einstein's theories, can make accurate measurements of dark energy and how it affects changes in the universe. The new map can also measure the universe's expansion rate.

Space July 18, 2016

Biggest 3D Map Of 1.2 Million Galaxies To Shed Light On Dark Energy

Scientists constructed the largest-ever three-dimensional map of distant galaxies to come up with the most precise measurements yet of the elusive dark energy that drives the accelerated expansion of the universe.

Space July 14, 2016

This 'Frankenstein' Galaxy Is Made From Cosmic Parts Of Other Galaxies

A rare 'Frankenstein' galaxy located 250 million light-years away may have been the result of separate entities merging together, a new study revealed. Scientists were surprised at the galaxy's bizarre characteristics.

Space July 12, 2016

Ultra Deep Survey Infrared Images Offer Distant View Of 250,000 Galaxies

Spectacular new infrared images from the Ultra Deep Survey revealed a deep glimpse of the distant universe. What can astronomers learn from these infrared images?

Space July 4, 2016

Hubble Space Telescope Sees Skyrocket In Tadpole Galaxy

A rarely seen form of galaxy that resembles a tadpole has been imaged by astronomers using the Hubble Space Telescope. What secrets did Kiso 5639 reveal?

Space June 28, 2016

ALMA Shows Supermassive Black Holes Also Feed On Cold Gas

It was thought that black hole exclusively feed on hot ionized gas. It turns out black holes also feed on clouds of cold space gas, ALMA observations revealed.

Space June 9, 2016

Astronomers Detect Hydrogen Signal From Distant Galaxy

Astronomers observe a hydrogen signal coming from a distant galaxy. While hydrogen is abundant in the universe, its presence reveals much about a galaxy since it is the primary fuel used in creating stars.

Space June 3, 2016

What Prevents Formation Of New Stars? Supermassive Black Holes In Red Geyser Galaxies Hold Answer

Why do some galaxies stop producing stars? A new study offers clues on how supermassive black holes at the center of Red Geyser galaxies could prevent formation of new stars.

Space May 26, 2016

Faint Blue Galaxy Could Shed Light On Big Bang

A faint blue galaxy located 30 million light-years from Earth could reveal answer to mysteries of the Big Bang. What can the Little Lion teach astronomers about the earliest galaxies in the universe?

Space May 13, 2016

Astronomers Observe Peanut Shell-Shaped Galaxies For The First Time

For the first time, astronomers have seen two galaxies with a very unique peanut shell-shaped configuration. There’s not only one but two of these peanuts.

Space May 9, 2016

ALMA Measures Mass Of Black Hole With Unprecedented Precision

A supermassive black hole has been "weighed" by astronomers with an unprecedented level of precision. Why is this essential for understanding the basic nature of galaxies through the universe?

Space May 6, 2016

Dwarf Dark Galaxy Spotted Through Gravitational Lens - Check It Out!

A dark matter galaxy may have been detected, by accident, by astronomers testing equipment at ALMA. How did they find a galaxy that does not give out light?

Space April 15, 2016

Supermassive Black Holes May Be More Common Than Previously Believed

If supermassive black holes can be found in sparsely populated regions of the universe like Galaxy NGC 1600 and not just in dense ones like the Coma cluster, then they have a much bigger population out there than previously thought, according to scientists.

Space April 8, 2016

Hubble Space Telescope Images Most Distant Galaxy Ever Seen

Galaxy GN-z11 is seen by the Hubble Space Telescope, sitting 13.4 billion light years from Earth. How are astronomers searching for the oldest families of stars?

Space March 4, 2016

This Stunning 187-Million-Pixel Map Of The Milky Way Shows Us The Places Where Stars Are Born

All of us have dreamed of reaching for the stars. A breathtaking map of the Milky Way shows how beautiful our home galaxy is, and at the same time, points us to the regions where stars are born.

Space February 26, 2016

Black Hole 21 Billion Times More Massive Than The Sun Sits At The Heart Of Elliptical Galaxy

Distant galaxy NGC 4889 has a supermassive black hole with a mass 21 billion times that of our sun - a record-breaking discovery. NASA and ESA observed the new discovery, which now in a dormant phase for a more intimate look at black holes and faraway galaxy formations.

Space February 13, 2016

Astronomers Peek Behind The Milky Way And Discover Hundreds Of Hidden Galaxies: Why This Matters

Scientists at the International Center for Radio Astronomy Research in Australia have discovered hundreds of new galaxies hiding behind the expanse of the Milky Way. The team believes this could help them uncover more information on a massive gravitational anomaly in space known as the Great Attractor.

Space February 10, 2016

Researchers Find 250 Galaxies Just Beyond The Milky Way

Researchers have found a whopping 250 previously-undiscovered galaxies by using a radio telescope. Many of the galaxies discovered were thought to have been there, but they had not been observed.

Space February 9, 2016

Hubble Spots A Cosmic Rebel: Beautiful, Irregularly Shaped Galaxy Has An Ultraluminous X-Ray Source

Hubble Space Telescope was able to capture an irregular galaxy called NGC 5408. The rebel galaxy does not have a typical shape and is said to have an ultraluminous X-ray source.

Space January 29, 2016

Stellar Drama: Globular Clusters 'Adopt' Baby Stars Rather Than Having 'Biological Children'

A new study conducted by researchers in China and the United States suggests that dense collections of stars known as globular clusters are capable of producing newer generations of stars. This is done by taking in star-forming dust and gas that the clusters encounter as they move about their respective host galaxies.

Space January 28, 2016

Changing-Look Quasar SDSS J1011+5442 Dims After Galactic Feast Of Glowing Hot Gas

The bright light of quasar SDSS J1011+5442 has significantly dimmed in a period of just two years. Astronomers attribute this sudden change to the quasar running out of fuel.

Space January 10, 2016

Scientists Discover Gamma Rays Older Than The Earth

Gamma rays from a blazar and which took 7.6 billion years to reach Earth were caught by NASA's Fermi telescope in April. In a follow-up study, scientists examined the blazar again and detected high-energy gamma rays that are crucial in probing the evolution of extragalactic background light and the universe.

Space December 16, 2015

Hubble And Spitzer Space Telescopes Make 'Tag-Team' Discovery Of Farthest, Faintest Galaxy

A discovery could yield a new understanding of the formation of the universe's earliest galaxies, astronomers say. The galaxy is seen as it existed 13.8 billion years ago.

Space December 6, 2015

Science Images Of The Week: Songbirds, Stars, Storms And Sperm

This week's images go from macro to micro in a major way. From dead galaxies to mouse gametes, we've got it all.

Space November 20, 2015

Giant Galaxies Nearly As Old As The Big Bang That Shouldn't Exist Mystify Astronomers

Astrophysicists are puzzled by massive galaxies almost as old as the universe. Such large galaxies from when the universe was just a few billion years old shouldn't have had time to form, they say.

Space November 20, 2015

New Theory Might Tell Us How Galactic Magnetic Fields Form

Physicists at Princeton may have the answer to how magnetic fields form around stars and galaxies ... and it's totally counter-intuitive.

Space November 12, 2015

Newly Discovered Ancient Dwarf Galaxies Shed Light On Reionization Of Early Universe

The discovery of 252 dwarf galaxies enabled astronomers to see what occured in the early universe. Scientists were able to look into the universe's early formation dating back 600 to 900 million years after the Big Bang.

Space October 24, 2015

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