Today's Spiral Galaxies Were Once the Ugly Ducklings
Image 1: The Hubble sequence six billion years ago was very different from the one astronomers see today. The two sections show how many more peculiar shaped galaxies (marked Pec) are seen among distant galaxies, as opposed to among local galaxies. The data organization follows the Hubble tuning-fork classification scheme invented in 1926 by the same Edwin Hubble in whose honor the space telescope is named. The top image represents the current ? or local ? Universe. Three percent of galaxies are elliptical (marked E), 15% lenticular (marked S0), 72% spiral (marked Sa to Sd, or SBb to SBd) and 10% peculiar (marked Pec). The bottom image represents the make up of the distant galaxies (six billion years ago), showing a much larger fraction of peculiar galaxies. The census found 4% of distant galaxies were elliptical, 13% lenticular (S0), 31% spiral and 52% peculiar. This implies that many of the peculiar galaxies ultimately become large spirals. These images were created from data that are part of large sky surv
Today's Spiral Galaxies Were Once the Ugly Ducklings
Using data from the NASA/ESA Hubble Space Telescope, astronomers have created a census of galaxy types and shapes.
Mon 8 Feb 10 from SPACE.com
Forming the present-day spiral galaxies
(PhysOrg.com) -- Using data from the NASA/ESA Hubble Space Telescope, astronomers have created a demographic census of galaxy types and shapes from a time before the Earth and the sun existed, ...
Thu 4 Feb 10 from PhysOrg
Featured - Forming the present-day spiral galaxies
Galaxy morphology, or the study of the shapes and formation of galaxies, is a critical and much-debated topic in astronomy. An important tool for this is the Hubble sequence or Hubble tuning-fork ...
Thu 4 Feb 10 from Labspaces.net
Galactic Survey Helps Explain Evolution Of Hubble Sequence
For the first time, a team of astronomers has completed a demographic census of galaxy types at two different points in the Universe's history -- in effect, creating two Hubble sequences ...
Thu 4 Feb 10 from Scientific Blogging
Where did today's spiral galaxies come from?
Hubble shows that the beautiful spirals galaxies of the modern universe were the ugly ducklings of six billion years ago.
Thu 4 Feb 10 from Eurekalert
Where did today's spiral galaxies come from?, Fri 5 Feb 10 from ScienceDaily
Where did today's spiral galaxies come from?, Thu 4 Feb 10 from e! Science News
Where did today's spiral galaxies come from?, Thu 4 Feb 10 from R&D Mag
Where did today's spiral galaxies come from?, Thu 4 Feb 10 from Science Blog
Hubble Shows Forming Of Today's Galaxies
Image 1: The Hubble sequence six billion years ago was very different from the one astronomers see today. The two sections show how many more peculiar shaped galaxies (marked Pec) are seen among ...
Thu 4 Feb 10 from RedOrbit
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