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The Milky Way shaped life on Earth
11-14-2006 · EurekAlert!Frenzied star-making in the Milky Way Galaxy starting about 2,400 million years ago had extraordinary effects on life on Earth. Harvests of bacteria in the sea soared and crashed in a succession of booms and busts, with an instability not seen before or since.
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- First X-ray detection of a colliding-wind binary beyond the Milky Way
02-16-2007 · European Space Agency (ESA)
Imagine two stars with winds so powerful that they eject an Earth's worth of material roughly once every month. Next, imagine those two winds colliding head-on. Such titanic collisions produce multimillion-degree gas, which radiates brilliantly in X-rays. Astronomers have conclusively identified the X-rays from about two-dozen of these systems in our Milky Way. But they have never seen one outside our galaxy — until now.
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- First X-ray detection of a colliding-wind binary beyond Milky Way
02-16-2007 · EurekAlert!
Imagine two stars with winds so intense that they eject an Earth's worth of material roughly once every month. Next, imagine those two winds colliding head-on. Such titanic collisions produce multimillion-degree gas, which radiates brilliantly in X-rays. Astronomers have conclusively identified the X-rays from about two-dozen of these systems in our Milky Way. But they have never seen one outside our galaxy -- until now.
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- Smithsonian study concludes Caribbean extinctions occurred 2M years after apparent cause
03-12-2007 · EurekAlert!
Smithsonian scientists and colleagues report a new study that may shake up the way paleontologists think about how environmental change shapes life on Earth. The researchers summarized the environmental, ecological and evolutionary consequences for Caribbean shallow-water marine communities when the Isthmus of Panama was formed. They concluded that extinctions resulting when one ocean became two were delayed by 2 million years.
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- Astronomers detect black hole in tiny 'dwarf' galaxy
01-07-2007 · EurekAlert!
Astronomers have found evidence of a supermassive black hole at the heart of a dwarf elliptical galaxy about 54 million light years away from the Milky Way galaxy where Earth resides.
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- Extreme star cluster bursts into life in new Hubble image
10-02-2007 · EurekAlert!
The NASA/ESA Hubble Space Telescope has captured a spectacular image of NGC 3603, a giant nebula hosting one of the most prominent massive young clusters in the Milky Way, thus supplying a prime template for star formation studies.
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- Star on a Hubble diet
12-11-2006 · EurekAlert!
High-resolution observations from Hubble have shed light on the real mass of a star previously believed to be amongst the heaviest known in our Milky Way. Originally, the mass of the star was thought to be an incredible 200-300 solar masses, but turned out to be only 100 solar masses.
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- Extreme star cluster in new Hubble images
10-02-2007 · European Space Agency (ESA)
The gigantic nebula NGC 3603 hosts one of the most prominent, massive, young clusters in the Milky Way. Hubble has been observing this prime location for star formation studies.
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- Early Earth haze may have spurred life, says University of Colorado study
11-06-2006 · EurekAlert!
Hazy skies on early Earth could have provided a substantial source of organic material useful for emerging life on the planet, according to a new study led by the University of Colorado at Boulder.
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- Researchers create artificial enzyme that mimics the body's internal engine
03-15-2007 · EurekAlert!
Cytochrome c oxidase (CcO) is the ultimate enzyme responsible for all aerobic life on Earth. It's also a crucial component of the cellular machinery that generates energy in our body. Now Stanford University scientists have built a new model of the enzyme's active site that could one day help researchers gain insights into the causes of cancer and other major diseases, and might even prove useful in the development of new forms of alternative energy.
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- In the Zone: Extrasolar planet with the potential for life
04-28-2007 · Science News Online
Astronomers this week announced that they had found Earth's closest known analog outside the solar system, an object with an average temperature that may allow water to be liquid on its surface.
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