13 julho 2017

NGC 4449: Close up of a Small Galaxy


(xxxedit and linkxxx) Grand spiral galaxies often seem to get all the glory. Their young, blue star clusters and pink star forming regions along sweeping spiral arms are guaranteed to attract attention. But small irregular galaxies form stars too, like NGC 4449, about 12 million light-years distant. Less than 20,000 light-years across, the small island universe is similar in size, and often compared to our Milky Way's satellite galaxy, the Large Magellanic Cloud (LMC). This remarkable Hubble Space Telescope close-up of the well-studied galaxy was reprocessed to highlight the telltale reddish glow of hydrogen gas. The glow traces NGC 4449's widespread star forming regions, some even larger than those in the LMC, with enormous interstellar arcs and bubbles blown by short-lived, massive stars. NGC 4449 is a member of a group of galaxies found in the constellation Canes Venatici. It also holds the distinction of being the first dwarf galaxy with an identified tidal star stream.

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On August 23, 1989, two million peaceful demonstrators joined...



On August 23, 1989, two million peaceful demonstrators joined hands across Estonia, Latvia, and Lithuania to protest the occupation of the Baltic states by the Soviet Union. The chain, 675 kilometers long (that’s about 420 miles), connected the capitals of Vilnius, Riga, and Tallinn. The whole thing was coordinated via hand-held portable radio! The protesters peacefully joined hands for 15 minutes at 7 p.m. local time, saying they wanted to demonstrate solidarity among the three nations in their desire for independence.

Moscow responded with heated rhetoric but backed down when the activists appealed to the United Nations. Within seven months, Lithuania had declared its independence. By the end of 1991, just two years later, all three Baltic states were free.

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The British pound is the world’s oldest currency still...



The British pound is the world’s oldest currency still in use - it is 1200 years old.

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Forensic Psychology Information Guide

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Jupiter’s Great Red Spot (Enhanced Color)


This enhanced-color image of Jupiter’s Great Red Spot was created by citizen scientist Gerald Eichstädt using data from the JunoCam imager on NASA’s Juno spacecraft.

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VISIT –>...



VISIT –> http://ift.tt/2flMKWy for quality I/O psychology information and resources.

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