The team of researchers from the University of Leicester (UK) and Monash University in Australia investigated how some black holes grow so fast that they are billions of times heavier than the sun. Professor Andrew King from the Department of Physics and Astronomy, University of Leicester, said that almost every galaxy has an enormously massive black hole in its center. Our own galaxy, the Milky Way, has one about four million times heavier than the sun.
Astronomers have identified the star that may be responsible for a supernova discovered by skywatchers last week. The supernova popped up in the galaxy M95 about 33 million light-years from Earth. It was first reported last week by a several different observers and soon confirmed by major observatories. Now a team led by Nancy Elias-Rosa of Spain’s Institute of Space Studies of Catalonia has compared new photos of the exploded star with pictures taken before the supernova occurred to identify what could very well have been the culprit star.
An international team of astronomers from Australia, Germany, Switzerland, and Finland has discovered a rare dwarf galaxy, called LEDA 074886, which has a striking resemblance to an emerald cut diamond. The astronomers discovered the rectangular shaped galaxy within a group of 250 galaxies some 70 million light years away. As said Associate Professor Alister Graham from Swinburne University of Technology in the Universe around us, most galaxies exist in one of three forms: spheroidal, disc-like, or lumpy and irregular in appearance.
Studies using X-ray and ultraviolet observations from NASA’s Swift satellite provide new insights into the elusive origins of an important class of exploding star called Type Ia supernovae. These explosions, which can outshine their galaxy for weeks, release large and consistent amounts of energy at visible wavelengths. These qualities make them among the most valuable tools for measuring distance in the universe.
The NASA Visualization Explorer is now delivering new opportunities to explore NASA’s research of the sun, planetary bodies, Earth and the universe to your iPad. Since July 2011, the Visualization Explorer iPad app, NASA Viz for short, has delivered two stories each week with a strong focus on Earth science. That two story per week schedule will continue, but now with stories that cover the breadth of the agency’s science mission and continue to highlight NASA’s artful data visualization. NASA’s Science Mission Directorate is organized into four disciplines: Heliophysics, Planetary, Astrophysics and Earth science.
The launch of NASA’s next science mission, a spacecraft to study black holes and other high-energy enigmas of the universe, has been officially delayed. This instrument ,called NuSTAR (Nuclear Spectroscopic Telescope Array), is an X-ray space observatory that will study the universe through the shortest wavelength, highest-frequency range of light. The spacecraft is designed to collect data with greater sensitivity and clarity than any X-ray mission before. As reported Nasa the mission will advance our understanding of how structures in the universe form and evolve.
The globular cluster, called Messier 9, shines in this new photo from the Hubble Space Telescope.The cluster Messier 9 contains hordes of stars swarming in a spherical cloud about 25,000 light-years from Earth. The object is too faint to be seen with the naked eye, and when it was discovered by French astronomer Charles Messier in 1764, the scientist could only resolve it as a faint smudge that he classified as a nebula. Hubble Space Telescope released a new picture of Messier 9 on March 16.
Astronomers by using NASA’s Hubble Space Telescope were able to find several examples of galaxies containing quasars, which act as gravitational lenses, amplifying and distorting images of galaxies aligned behind them. Quasars are among the brightest objects in the universe, far outshining the total starlight of their host galaxies. Quasars are powered by supermassive black holes. To find these rare cases of galaxy-quasar combinations acting as lenses, a team of astronomers led by Frederic Courbin at the Ecole Polytechnique Federale de Lausanne (EPFL, Switzerland) selected 23,000 quasar spectra in the Sloan Digital Sky Survey (SDSS).
New observations which was made by using ESO’s Very Large Telescope will help to better understand the growth of teenage galaxies. In the biggest survey of its kind astronomers have found that galaxies changed their eating habits during their teenage years the period from about 3 to 5 billion years after the Big Bang. At the start of this phase smooth gas flow was the preferred snack, but later, galaxies mostly grew by cannibalising other smaller galaxies. Galaxies examined through the VLT are located in a tiny patch of sky more than 40 million light-years away, in the constellation of Cetus.