So So Many Galaxies, So So Little Time

Used to be there were between 100 and 200 billion galaxies in the universe. Plenty to go around. That was the estimate up until this fall, when an international team, led by Christopher Conselice from the University of Nottingham (UK) concluded there are at least 10 times that number or 1 to 2 trillion! Astronomers…
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Great Balls Of Fire! Hubble Discovers A Real ‘Shooting’ Star

I loved Roman candles as a kid. You know the firework. You light one end and it shoots out balls of fire from the other. I never imagined we’d find the stellar equivalent of this July 4th favorite, but a team of astronomer’s using the Hubble Space Telescope did just that. In a recent paper they report the…
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ALMA Goes Fossil Hunting With Hubble, Discovers Gassy Past

Back in 2004 the Hubble Ultra Deep Field (UDF) images blew our minds. 10,000 galaxies visible in an otherwise empty region of sky 1/10th the diameter of the full moon. How’s that? If every fly-speck of sky is similarly jammed with stellar pinwheels, there must be billions of galaxies above us. And there are! These spectacular…
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Hubble Makes Movies Of Jupiter’s Giant Auroras

Hubble Space Telescope time-lapse of auroras photographed in ultraviolet light over Jupiter’s north polar region on May 19, 2016. The “hot spot” at right is caused by material from Io accelerated toward Jupiter by electric and magnetic fields. Credit: NASA, ESA, J. Nichols It’s been pretty quiet here at mid-latitudes the past month as far as auroras go.…
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Mars Is Close, Bright And Awesome

This is it. What we’ve all been waiting for. Mars and Earth will pair up on the same side of the sun Sunday (May 22), putting the two planets closer to one another than anytime in the past 10 years. The special event is called an opposition because Mars lies directly opposite the sun in the…
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