Kapteyn's work to map the Sidereal System was based on star counts. Now that we know that the Stellar System is comparable to many external spiral galaxies, this information can be used to further constrain models for the structure of our Galaxy. It is now possible to also use surface ...
The Milky Way is a large barred spiral galaxy, with a relatively small bar compared to most galaxies of a similar size. A central bar (or central bulge) is a circular to oval shaped structure of old stars which lies at the center of spiral galaxies. What is the biggest planet in the ...
The Milky Way's system of small, orbiting satellite galaxies is quite unusual, a new 12-year study of other galaxies in the local universe has found. The Satellites Around Galactic Analogs (SAGA) survey is being conducted by a small group of astronomers to learn how the Milky Way and its...
The team believes it is the result of a phenomenally energetic burst that erupted near the Milky Way's supermassive black hole several million years ago. "The center of our galaxy is relatively calm when compared to other galaxies with very active central black holes," said Ian Heywood from O...
The team believes the enormous, hourglass-shaped structure likely is the result of a phenomenally energetic burst that erupted near the Milky Way's supermassive black hole several million years ago. "The center of our galaxy is relatively calm when compared to other galaxies with very active centr...
● Elliptical galaxies are also found which are usually composed of old stars having a low mass. They normally occur in Virgo superclusters. Around 10 - 15% of known galaxies are of this type. The starlight from these galaxies is very dim as compared to spiral galaxies. ...
Milky Way plane means that dust obscures those that are more than a few thousandlight-yearsfrom the Sun. Byanalogywith open clusters in external galaxies similar to the Galaxy, it is surmised that they follow the general distribution ofintegratedlight in the Galaxy, except that there are ...
The majority of massive disk galaxies in the local Universe show a stellar barred structure in their central regions, including our Milky Way1,2. Bars are supposed to develop in dynamically cold stellar disks at low redshift, as the strong gas turbulence typical of disk galaxies at high redsh...
galaxies, it experienced a series of violent growth spurts and intense periods of cataclysmic change while battling to survive. Over billions of years, our Milky Way cannibalised neighbouring galaxies, adding countless new stars and triggering great epochs of creation. Brian reveals we may even owe...
Future instruments like the Large Synoptic Survey Telescope, which will detect much fainter stars across the sky, should be able to identify the other streams, they added. "The star streams that have been mapped so far are like creeks compared to the giant river of stars we predict will be...