Tag Archives: galaxies

It is during rare merging events that galaxies undergo dramatic changes in their appearance and in their stellar content. These systems are excellent laboratories to trace the formation of star clusters under extreme physical conditions. The Milky Way typically forms star clusters with masses that are 10 thousand times the mass of our Sun. This doesn’t compare to the masses ...

In a first of its kind, researchers have obtained the deepest ever view of the universe where over 250,000 galaxies have been detected in an area four times the size of full moon. Astronomers at the University of Nottingham, led by Omar Almaini, Professor of Astrophysics in the School of Physics and Astronomy, presented their results at the National Astronomy ...

NASA’s Hubble Space Telescope team of scientists from NASA have discovered that the universe is expanding 5 percent to 9 percent faster than previously thought. “This surprising finding may be an important clue to understanding those mysterious parts of the universe that make up 95 percent of everything and don’t emit light, such as dark energy, dark matter, and dark ...

The phenomena of an Einstein ring that was predicted by Einstein’s theory of General Relativity but remained a mystery has recently been discovered by researchers. An Einstein ring is a distorted image of a very distant galaxy, which is termed “the source” that produces the bending of the light rays due to a massive galaxy, termed “the lens”, lying between ...

Based on galactoseismology, Indian origin astronomer Sukanya Chakrabarti, former post-doc at Berkeley and her mentor Leo Blitz have found three bright pulsating stars on the periphery of the Milky Way galaxy which could be beacons from a dwarf, dark matter galaxy. Using supercomputer simulation of the collision of a dwarf and dark-matter galaxy over the course of the last billion ...

A Yale University astronomer has helped untangle the cosmic knots of stars at the center of giant, elliptical galaxies. Two studies, one led by Yale’s Grant Tremblay and other led by Michigan State University researcher Megan Donahue, are providing new information about why the universe’s largest elliptical galaxies ratchet down their star production despite having plenty of available star-making material. ...

Some galaxies “burst” and to know the reason, a team of astronomers have dissected a cluster of star-forming clouds at the heart of NGC 253 and found that they are 10 times denser and far more turbulent than similar clouds in normal spiral galaxies. Starburst galaxies explode and transmute gas into new stars at a dizzying pace of up to 1,000 ...