The Sky Tonight

April 02, 2015

Astronomers discover likely precursors of galaxy clusters we see today
Tucson AZ (SPX) Apr 02, 2015
By combining observations of the distant Universe made with ESA's Herschel and Planck space observatories, cosmologists have discovered what could be the precursors of the vast clusters of galaxies that we see today. Galaxies like our Milky Way with its 100 billion stars are usually not found in isolation. In the Universe today, 13.8 billion years after the Big Bang, many are in dense clusters of tens, or even hundreds of galaxies. However, these clusters have not always existed, and a key questio ... read more

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Dark matter even darker than once thought Astronomers using observations from the NASA/ESA Hubble Space Telescope and NASA's Chandra X-ray Observatory have studied how dark matter in clusters of galaxies behaves when the clusters collide. T ... more		Comet dust: Planet Mercury's 'invisible paint' A team of scientists has a new explanation for the planet Mercury's dark, barely reflective surface. In a paper published in Nature Geoscience, the researchers suggest that a steady dusting of carbo ... more		Stop blaming the moon "It must be a full moon" is a common refrain when things appear more hectic than usual. The moon is even blamed when things get crazy at hospital emergency rooms or birth wards. "Some nurses ascribe ... more
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Human 2 Mars Conference Mat 5-7 2015 - Washington DC

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