Astronomers using the
Atacama Large Millimeter / submillimeter Array (ALMA) for the first time to
directly observe how extensive gas streams overcome a gap in the disk of matter
around a young star. In theory, should such gas streams arise during the growth
phase of planets? This is a key stage in the birth of the gas giants. The
observations are the second January 2013 published in the journal Nature.
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Saturday, January 12, 2013
Thursday, January 10, 2013
New View of the globular cluster 47 Tucanae
Globular clusters 47
Tucanae are huge spherical cloud of old stars held together by gravity. They
are turning around the cores of galaxies, and satellites orbiting Earth. These
groups of stars contain very little gas and dust - it is believed that most of
the cluster has been driven by winds and explosions of stars it contains, or
has been torn by the interstellar gas has been interacting with the cluster.
Any remaining material coalesced into stars billions of years ago.
Monday, January 7, 2013
Reverse Effect: Eruption of climate
The eruption can cause
climate change, no doubt. Supervolcanoes that send to the stratosphere many
tons of ash may affect the global climate. But it appears that perhaps the
reverse effect: the German and American scientists have found evidence that
climate can change the activity of volcanoes.
This is something new!
However, researchers at Harvard University in collaboration with the center
GEOMAR know what they say on their side - the results of the analysis of
volcanic deposits in the last million years.
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