Quantcast
Last updated on April 24, 2014 at 21:24 EDT

Latest Cosmic distance ladder Stories

Planetary Nebula Survey By Chandra
2012-10-11 05:21:48

April Flowers for redOrbit.com - Your Universe Online An international team of astronomers using NASA's Chandra X-ray Observatory has created a sweeping new survey of dying stars — or planetary nebula — in the neighborhood of the Sun. The resulting X-ray images shed light on the violent "end game" of a Sun-like star's life. Led by Joel Kastner from the Rochester Institute of Technology (RIT), the team won seven days of observation time with Chandra in 2011-2012 to survey and...

Milky Way Larger Than Previously Thought
2012-10-06 07:49:29

redOrbit Staff & Wire Reports — Your Universe Online The mass of the Milky Way is approximately 20% larger than previously believed, scientists from the National Astronomical Observatory of Japan (NAOJ) have discovered. The NAOJ team, led by associate professor Mareki Honma, used measurements from radio telescopes, including Japan's VLBI (Very Long Baseline Interferometry) Exploration of Radio Astrometry or VERA device, to determine that the distance from the sun to the center...

Spitzer Helps Measure The Universe
2012-10-03 20:20:38

Lee Rannals for redOrbit.com — Your Universe Online NASA's Spitzer Space Telescope has allowed astronomers to make the most precise measurement yet of the rate at which our universe is expanding. This expansion rate, also known as the Hubble Constant, is critical for understanding the age and the size of the universe. In the latest research, Spitzer took advantage of long-wavelength infrared light to make its new measurement. The newly refined value for the Hubble Constant,...

2012-10-03 10:20:08

WASHINGTON, Oct. 3, 2012 /PRNewswire-USNewswire/ -- Astronomers using NASA's Spitzer Space Telescope have announced the most precise measurement yet of the Hubble constant, or the rate at which our universe is stretching apart. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) The Hubble constant is named after the astronomer Edwin P. Hubble, who astonished the world in the 1920s by confirming our universe has been expanding since it exploded into being 13.7 billion years ago....

Transit Of Venus Videos Unveiled
2012-09-28 22:11:26

Lee Rannals for redOrbit.com — Your Universe Online [ Watch the Video: New Transit of Venus 2012 Movie ] [ Watch the Video: Transit of Venus 2012 From Svalbard and Canberra ] New movies of the transit of Venus that took place earlier this year clearly show the parallax effect that makes the event so important to scientists. Astronomers compressed six hours of observations and 5,000 individual images taken by optical and solar telescopes into a 40 second video. The...

2012-09-19 10:20:22

WASHINGTON, Sept. 19, 2012 /PRNewswire-USNewswire/ -- With the combined power of NASA's Spitzer and Hubble space telescopes, as well as a cosmic magnification effect, astronomers have spotted what could be the most distant galaxy ever seen. Light from the young galaxy captured by the orbiting observatories first shone when our 13.7-billion-year-old universe was just 500 million years old. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) The far-off galaxy existed within an...

2012-09-14 14:46:09

Scientists of KIT and Ruhr-Universität Bochum (RUB) have reached a record precision in radar distance measurements. With the help of a new radar system, an accuracy of one micrometer was achieved in joint measurements. The system is characterized by a high precision and low cost. Potential applications lie in production and plant technology. Precise determination of distances is of increasing importance in fabrication technology, for instance, when actuating robots,...

New Clues Into Kepler Supernova Explosion Reveal Power, Distance
2012-09-12 13:12:54

April Flowers for redOrbit.com - Your Universe Online A bright new star outshone even Jupiter in 1604 and then it dimmed over several weeks. Johannes Kepler and other sky watchers witnessed this event, and centuries later, the debris left from this stellar explosion is known at the Kepler supernova remnant. Astronomers have studied the Kepler supernova remnant for a long time trying to determine exactly what happened when the star exploded. New analysis of a long observation by NASA's...

Two Different Sources for Supernova, Both Models Are Correct
2012-05-07 10:40:40

The exploding stars known as Type Ia supernovae serve an important role in measuring the universe, and were used to discover the existence of dark energy. They're bright enough to see across large distances, and similar enough to act as a "standard candle" - an object of known luminosity. The 2011 Nobel Prize in Physics was awarded for the discovery of the accelerating universe using Type Ia supernovae. However, an embarrassing fact is that astronomers still don't know what star systems make...

August Supernova Was A White Dwarf
2012-01-11 13:25:22

Fluke observation 4 hours after star exploded allows stronger limits on size of progenitor Last year's discovery of the nearest Type Ia supernova in decades — captured only 11 hours after it exploded — allowed astronomers to finally cinch the identity of the stars behind these explosions, which have become key measures of cosmic distance. That supernova, called SN2011fe, and presumably most Type Ia supernovae were originally white dwarfs extremely dense and compact stars...


Latest Cosmic distance ladder Reference Libraries

45_03c916cf051c1a581c0d52b3ccdd7561
2010-09-13 16:56:08

The Coma Cluster (Abell 1656), along with the Leo Cluster, is one of two major clusters compromising the Coma Supercluster. It contains over 1000 identified galaxies. Most of the galaxies in the center of the Coma Cluster are elliptical galaxies including both dwarf and giant. However the center is dominated by NGC 4874 and NGC 4889, two giant elliptical galaxies. The brightest galaxies are visible, a few degrees north of the galactic pole, with an amateur telescope larger than 20 cm. The...

More Articles (1 articles) »