Donovan Domingue

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KICP Workshop on Outreach and Education

The Adler Planetarium in Chicago, site of some amazing astronomy fun. Photo credit: Adlerplanetarium.org.<p>Science blogging, space visualization, and… …

A Key Reason Why U.S. Politicians Don't Understand Science

Why Scientists Won't Talk To The U.S. Government

George R.R. Martin Swings by SNL to Talk About His Writer's Block

Solar System Data

Sunlit Side of the Planet Mercury

In this scene, which was acquired by the MESSENGER spacecraft looking from the shadows toward the sunlit side of the planet Mercury, a 120-km (75 …

APOD: Galaxy NGC 474: Shells and Star Streams (2014 Jan 05) Image Credit & Copyright: P.-A. Duc (CEA, CFHT), Atlas 3D Collaboration http://apod.nasa.gov/apod/ap140105.html Explanation: What's happening to galaxy NGC 474? The multiple layers of emission appear strangely complex and unexpected given the relatively featureless appearance of the elliptical galaxy in less deep images. The cause of the shells is currently unknown, but possibly tidal tails related to debris left over from absorbing numerous small galaxies in the past billion years. Alternatively the shells may be like ripples in a pond, where the ongoing collision with the spiral galaxy just above NGC 474 is causing density waves to ripple though the galactic giant. Regardless of the actual cause, the above image dramatically highlights the increasing consensus that at least some elliptical galaxies have formed in the recent past, and that the outer halos of most large galaxies are not really smooth but have complexities induced by frequent interactions with -- and accretions of -- smaller nearby galaxies. The halo of our own Milky Way Galaxy is one example of such unexpected complexity. NGC 474 spans about 250,000 light years and lies about 100 million light years distant toward the constellation of the Fish (Pisces). http://www.iau.org/administration/membership/individual/9453/ http://irfu.cea.fr/ http://www.cnrs.fr/ http://www.cfht.hawaii.edu/ http://www-astro.physics.ox.ac.uk/atlas3d/ http://www.cfht.hawaii.edu/en/news/EllGal/ Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=140105 #APOD

New Research Affirms That Milky Way Has Four Spiral Arms

Our Milky Way galaxy has four arms instead of two, according to just published results of a 12-year study by scientists in the U.K.<p>The findings, published in the <i>Monthly Notices of the Royal Astronomical Society</i>, affirm what astronomers surmised in the 1950s but began to doubt in 2008 after seeing …

360 Degrees of Milky Way at Your Fingertips

Touring the Milky Way’s a blast with this brand new <b>360-degree interactive panorama</b>. More than 2 million infrared photos taken by NASA’s Spitzer Space …

Astrophysics