Hubble peered into the history of galaxies

This picture was taken with the Hubble Space Telescope agency NASA and ESA. It shows the dwarf galaxy NGC 1140 is located 60 million light-years from Earth in the constellation Eridanus. As seen in this image, the galaxy NGC 1140 has an irregular shape, like the Large Magellanic Cloud - a small galaxy is a satellite of the Milky Way. 

Our galaxy has greater than before its diameter is ten times

The astronomers, led by John Stoke by the University of Colorado at Boulder (USA), reported that the new observations spectrograph Space Telescope "Hubble" forced them to rethink the size of the halo of spiral galaxies such as our Milky Way. So - and significantly change our estimates of their mass.

This entire glowing disc, which we used to call the Milky Way, represents only the tip of the iceberg, nine-tenths of which are lost in the darkness. 

Young, hot and blue

The universe is very old - well 13.8 billion years. Our home galaxy, the Milky Way, is also very old - some of their stars bring it to more than 13 billion years (eso0425).

Nevertheless, there is much going on: New objects are created, others are destroyed. In this picture you can see some of the newcomers: young stars that make up the star cluster NGC 2547.

But how young these cosmic youngsters really are? Although her exact age remains uncertain,

New View of the globular cluster 47 Tucanae

Globular clusters 47 Tucanae are huge spherical cloud of old stars held together by gravity. They are turning around the cores of galaxies, and satellites orbiting Earth. These groups of stars contain very little gas and dust - it is believed that most of the cluster has been driven by winds and explosions of stars it contains, or has been torn by the interstellar gas has been interacting with the cluster. Any remaining material coalesced into stars billions of years ago.

Galactic hobbits

What do we know about galaxies, Hobbits, and why they have such a peculiar name?

The name "hobbit galaxies" ("hobbit galaxy") - this is quite a new term used to describe galaxies that are smaller and dimmer than the dwarf galaxies. By the number of stars that inhabit such galaxies (hundreds of thousands of stars), these objects occupy an intermediate position between dwarf galaxies and star clusters.

Irregular galaxies tend to become disks

​​Through the use of Hubble and Keck telescopes, astronomers have come to a rather startling conclusion about the nature, which is the process of change in the "blue" galaxies. Specifically, it relates to a process of change that takes place in these galaxies has for now as eight billion years - in other words, for the period, which is more than half the age of the universe.

Until now, it was assumed that the disk-shaped galaxy with a classic for these galaxies form, appeared in the universe, in its present form, about 8 billion years ago, and only slightly changed in all that time. 

The Pipe Nebula

East of Antares and towards the center of our galaxy, the Milky Way, there are dark spots that extend over fields full of stars.

Cataloged in the early twentieth century by astronomer EE Barnard, these dark interstellar dust clouds include B59, B72, B77 and B78, which are seen in silhouette against the starry background.

Google has created a virtual map of the galaxy

Google has released an application for discover the universe:

The developers of the team Google Data Arts Team, the project created a beautiful Chrome Experiments demo 100,000 stars ", which shows the actual location of more than 100 thousand around the stars, the sun.

The development team Google Data Arts has released a new, experimental application for the browser Chrome, offers a virtual tour of our local stellar neighborhood.

Milky Way's black hole goes bang powerful flash

For unknown reason, the black hole (BH), located in the center of our Milky Way galaxy, regarding once a day generates an X-ray flash. Such outbreaks last for several hours, and their brightness can in some cases exceed the normal brightness of the black hole, even a hundred times. But in February 2012, astronomers using the X-ray Observatory "Chandra", recorded the most powerful flare ever observed on the central black hole in our galaxy known as Sagittarius A *.

Our galaxy caught for dinner: Milky Way star absorbs

Using the Sloan Digital Sky Survey, the researchers found that the torrent of stars, which is supposed to symbolize the remains of ancient star clusters, slowly absorbed with you our own Milky Way galaxy.

A team of astronomers from Yale University led by Ana Bonaca, masters and lead author of the new study, had previously noted that the Milky Way has a tendency to absorb dwarf galaxies, 

"Giant eye" for studying the Milky Way

Mission Gaia - a unique space observatory of the European Space Agency, which will make the survey of billions of stars, the Milky Way, built-in digital camera with a resolution of 1 billion pixels. This "giant eye" explores the galaxy and makes a detailed map of the distribution of stars in it.

Central nebulae in the Milky Way

The research instrument worlds most powerful recorded this fabulous view of the sky in one shot. The scene, looking near Sagittarius, covers an area of ​​approximately 3 degrees of curve or six times the diameter of the lunar disk.

The Lagoon Nebula (M8), Trifid Nebula (M20) and NGC 6559 (pictured at right) are, respectively, in the bottom of the scene, top right and bottom left. All of them are embedded in dusty fields and filled with stars of the Milky Way center.

Planetary Nebula Abell 39

Let's look at a planetary nebula nearly perfect spherical shape, whose name Abell 39 (Abell 39).

Today in our galaxy "Milky Way" is known more than 1500 planetary nebulae that are astronomical substance consisting of ionized gas shell and the central star - a white dwarf. Planetary nebulae are fast in astronomical terms the phenomenon, which lasts only a few tens of thousands of years. For comparison, the life of the parent star is a few billion years.

Clarification of the Milky Way's mass found more dark matter

A team of scientists from Japan initiate new, more accurate measurements of the distance from the solar system to the center of our galaxy, the Milky Way, which was found to be 26,100 light-years, and the rate of rotation of our galaxy near our solar system, which was found to be 240 km / s. Previous data on the speed of our galaxy is 220 km / s, which means that the mass of our galaxy - and especially the contribution, made ​​by dark matter - about 20% higher than previously thought.

The universe still has a lithium problem.

That's the allegation of a paper in this week's Nature by Researchers from the University of Notre Dame and the University of Illinois at Urbana-Champaign. Processes just after the Big Bang created ought To Have Certain Amounts of elements Such as hydrogen, helium, and lithium. Astronomers already knew the universe has far less of the isotope lithium-7 than it Should - studies of the old stars that surround the Milky Way

A star cluster has a secret

The ESO La Silla Observatory in Chile shows the stunning globular star cluster Messier 4. This group consists of tens of thousands of antique stars is one of the closest and one of the most studied globular clusters. Recent research has exposed that one of its stars has unusual and surprising properties; apparently it is the secret of eternal youth.

What is the Milky Way?

Specification we could well see the Milky Way from external fettle, we would see the center bulky, bright yellow, shaped like a rugby ball, and a thin disk of blue revolving approximately. The Milky Way is a barred spiral, like a pinwheel. It is believed that the center is a black hole, which scientists call Sagittarius A. The center is not rounding, but rather elongated. Near him are the oldest stars, red and yellow.

 Instinctive hub four arms: Arm Peruses, Orion Arm, Arm Cross Arm Sagittarius and Centaurs. Form a slowly rotating disk in a spiral. In the arms are the youngest stars, White and Blue. There are also many nebulae where new stars form. The Sagittarius Arm is the brightest of all.

A trail in the sky of the Milky Way

On top of plain night we can see a colorless group cross-ways the sky from side to side, with many stars. This is only a small part of our neighbors. Mutually we structure the Milky Way. The Romans called "Milk Road" which means it is Milky Way in Latin.

The Milky Way of our galaxy

Our galaxies the solar system is one of the twisting weapons, about 30,000 light years from the center and about 20,000 from the end.

The Star conflict will be with Andromeda

Shock will grow a new galaxy, which sum the mass of the Milky Way and Andromeda, where the Sun, according to observations made ​​during the last five years with the Hubble Space Telescope. The vast majority of stars survives the impact, but will be in different orbits about the center of the galaxy. The Sun, according to simulations from the Hubble observations, blown away in the quiet region of the Milky Way where you are now and remain on the periphery of the new galaxy, as the authors have announced the investigation in a wheel press organized by NASA.