micaiah

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How to learn the periodic table in 3 minutes

In high school science classes, students are encouraged to memorize the first 20 elements of the periodic table. There are other methods employed at …

So You Wanna Go To Space. Can You Put Up With The Superpower Bacteria?

“The space-grown communities of bacteria, called biofilms, formed a ‘column-and-canopy’ structure not previously observed on Earth."--NASA<p>We all love space here and we're sure, given that thousands of people applied for a one-way trip to Mars, that at least some of you want to spend a long time in …

How to discover an antibiotic: a historian's guide

Historians of science and medicine are often terrible killjoys when it comes to great stories about discovery and genius. We've been quick to point …

Printing artificial bone

Researchers develop method to design synthetic materials and quickly turn the design into reality using computer optimization and 3-D …

Nanotech

The Popular Science Guide To DNA

What is DNA?<p>DNA (deoxyribonucleic acid) is an extremely important molecule for life on Earth. All known living organisms use genetic information in their cell growth and development, division, and function – and DNA is responsible for encoding that information. Structurally, DNA is a double helix …

APOD: Stars and Lightning Over Greece (2013 July 03) Image Credit & Copyright: Bill Metallinos http://apod.nasa.gov/apod/ap130703.html Explanation: It may appear, at first, like the Galaxy is producing the lightning, but really it's the Earth. In the foreground of the above picturesque nighttime landscape is the Greek Island of Corfu, with town lights surrounding Lake Korrision. Visible farther in the distance are lights from the town of Preveza on the Greek mainland. In the more distant sky a thunderstorm is threatening, with two lightning strokes caught together during this 45 second wide-angle exposure taken in mid-May. The lightning branch on the left appears to be striking near Preveza, whereas the lightning strike on the right appears to be striking near Mount Ainos on the Greek Island of Cephalonia. Much farther in the distance, strewn about the sky, are hundreds of stars in the neighborhood of our Sun in the Milky Way Galaxy. Furthest away, arching over the entire panorama, are billions of stars that together compose the central band of our Milky Way. Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=130703 #APOD

APOD: M82: Starburst Galaxy with a Superwind (2013 July 4) Image Credit & Copyright: Ken Crawford (Rancho Del Sol Obs.) http://apod.nasa.gov/apod/ap130704.html Explanation: Also known as the Cigar Galaxy for its elongated visual appearance, M82 is a starburst galaxy with a superwind. In fact, through ensuing supernova explosions and powerful winds from massive stars, the burst of star formation in M82 is driving a prodigious outflow of material. Evidence for the superwind from the galaxy's central regions is clear in this sharp telescopic snapshot. The composite image highlights emission from long outflow filaments of atomic hydrogen gas in reddish hues. Some of the gas in the superwind, enriched in heavy elements forged in the massive stars, will eventually escape into intergalactic space. Including narrow band image data in the deep exposure has revealed a faint feature dubbed the cap. Perched about 35,000 light-years above the galaxy at the upper left, the cap appears to be galactic halo material ionized by the superwind shock or intense ultraviolet radiation from the young, massive stars in the galaxy's core. Triggered by a close encounter with nearby large galaxy M81, the furious burst of star formation in M82 should last about 100 million years or so. M82 is 12 million light-years distant, near the northern boundary of Ursa Major. http://www.imagingdeepsky.com/ Starship Asterisk* • APOD Discussion Page http://bb.nightskylive.net/asterisk/discuss_apod.php?date=130704 #APOD

APOD: NGC 2170: Still Life with Reflecting Dust (2013 Jul 07) Image Credit & Copyright: Adam Block, Mt. Lemmon SkyCenter, U. Arizona http://apod.nasa.gov/apod/ap130707.html Explanation: In this beautiful celestial still life composed with a cosmic brush, dusty nebula NGC 2170 shines at the upper left. Reflecting the light of nearby hot stars, NGC 2170 is joined by other bluish reflection nebulae, a compact red emission region, and streamers of obscuring dust against a backdrop of stars. Like the common household items still life painters often choose for their subjects, the clouds of gas, dust, and hot stars pictured here are also commonly found in this setting - a massive, star-forming molecular cloud in the constellation of the Unicorn (Monoceros). The giant molecular cloud, Mon R2, is impressively close, estimated to be only 2,400 light-years or so away. At that distance, this canvas would be about 15 light-years across. http://www.caelumobservatory.com/ http://skycenter.arizona.edu/ Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=130707 #APOD