Jamie Hester

21 Flips | 2 Magazines | @JamieHester | Keep up with Jamie Hester on Flipboard, a place to see the stories, photos, and updates that matter to you. Flipboard creates a personalized magazine full of everything, from world news to life’s great moments. Download Flipboard for free and search for “Jamie Hester”

How sex chromosomes evolve

The human Y chromosome barely resembles what it once was some 200 million years ago. To understand how sex chromosomes change so dramatically over …

Biology

Found: First U.S. Patient To Get MERS Without Traveling To The Middle East

The man contracted the virus from close contact with a healthcare worker who worked in Saudi Arabia. The virus is new and can be deadly, but the man is doing well and is not contagious.<p>After officials found the U.S.'s first case of the deadly virus MERS, they began tracking down everybody who had …

APOD: A Live View from the International Space Station (2014 May 14) Credit: NASA, UStream, HDEV Project http://apod.nasa.gov/apod/ap140514.html Explanation: If you were floating above the Earth right now, this is what you might see. Two weeks ago, the robotic SpaceX Dragon capsule that delivered supplies to the Earth-orbiting International Space Station (ISS) also delivered High Definition Earth Viewing (HDEV) cameras that take and transmit live views of Earth. Pictured above, when working, is the live video feed that switches between four cameras, each pointed differently. Watch white clouds, tan land, and blue oceans drift by. The above video will appear black when it is nighttime on the Earth below, but the space station's rapid 90-minute orbit compresses this dark time into only 45 minutes. The present location of the ISS above the Earth can be found on the web. If the video appears gray, this indicates that the view is either being switched between cameras, or communications with the ISS is temporarily unavailable. As the HDEV project continues, video quality will be monitored to assess the effects of high energy radiation, which types of cameras work best, and which Earth views are the most popular. Although this feed will eventually be terminated, lessons learned will enable better cameras to be deployed to the ISS in the future, likely returning even more interesting live feeds. http://www.nasa.gov/ http://www.ustream.tv/ http://www.nasa.gov/mission_pages/station/research/experiments/917.html Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=140514 #APOD

APOD: Illustris Simulation of the Universe (2014 May 12) Video Credit: Illustris Collaboration, NASA, PRACE, XSEDE, MIT, Harvard CfA; Music: The Poisoned Princess (Media Right Productions) http://apod.nasa.gov/apod/ap140512.html Note: Today's APOD is a video so please be sure to click the above link to view it. Explanation: How did we get here? Click play, sit back, and watch. A new computer simulation of the evolution of the universe -- the largest and most sophisticated yet produced -- provides new insight into how galaxies formed and new perspectives into humanity's place in the universe. The Illustris project -- the largest of its type yet -- exhausted 20 million CPU hours following 12 billion resolution elements spanning a cube 35 million light years on a side as it evolved over 13 billion years. The simulation is the first to track matter into the formation of a wide variety of galaxy types. As the virtual universe evolves, some of the matter expanding with the universe soon gravitationally condenses to form filaments, galaxies, and clusters of galaxies. The above video takes the perspective of a virtual camera circling part of this changing universe, first showing the evolution of dark matter, then hydrogen gas coded by temperature (0:45), then heavy elements such as helium and carbon (1:30), and then back to dark matter (2:07). On the lower left the time since the Big Bang is listed, while on the lower right the type of matter being shown is listed. Explosions (0:50) depict galaxy-center supermassive black holes expelling bubbles of hot gas. Interesting discrepancies between Illustris and the real universe do exist and are being studied, including why the simulation produces an overabundance of old stars. http://www.illustris-project.org/people/ http://www.nasa.gov/ http://www.prace-ri.eu/ https://www.xsede.org/ http://web.mit.edu/physics/people/faculty/vogelsberger_mark.html http://www.cfa.harvard.edu/ http://www.mediarightproductions.com/ Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=140512 #APOD

APOD: Voyager's Neptune (2014 May 15) Composite Image Credit & Copyright: Assembly/Processing - Rolf Olsen, Data - Voyager 2, NASA Planetary Data System http://apod.nasa.gov/apod/ap140515.html Explanation: Cruising through the outer solar system, the Voyager 2 spacecraft made its closest approach to Neptune on August 25, 1989, the only spacecraft to visit the most distant gas giant. Based on the images recorded during its close encounter and in the following days, this inspired composited scene covers the dim outer planet, largest moon Triton, and faint system of rings. From just beyond Neptune's orbit, the interplanetary perspective looks back toward the Sun, capturing the planet and Triton as thin sunlit crescents. Cirrus clouds and a dark band circle Neptune's south polar region, with a cloudy vortex above the pole itself. Parts of the very faint ring system along with the three bright ring arcs were first imaged by Voyager during the fly-by, though the faintest segments are modeled in this composited picture. Spanning 7.5 degrees, the background starfield is composed from sky survey data centered on the constellation Camelopardalis, corresponding to the outbound Voyager's view of the magnificent Neptunian system. http://www.rolfolsenastrophotography.com/ http://voyager.jpl.nasa.gov/ http://pds-rings.seti.org/voyager/iss/raw_images.html Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=140515 #APOD

APOD: Opportunity's Mars Analemma (2014 May 16) Image Credit: NASA/JPL/Cornell/ASU/TAMU http://apod.nasa.gov/apod/ap140516.html Explanation: Staring up into the martian sky, the Opportunity rover captured an image at 11:02 AM local mean time nearly every 3rd sol, or martian day, for 1 martian year. Of course, the result is this martian analemma, a curve tracing the Sun's motion through the sky in the course of a year (668 sols) on the Red Planet. Spanning Earth dates from July, 16, 2006 to June 2, 2008 the images are shown composited in this zenith-centered, fisheye projection. North is at the top surrounded by a panoramic sky and landscape made in late 2007 from inside Victoria crater. The tinted martian sky is blacked out around the analemma images to clearly show the Sun's positions. Unlike Earth's figure-8-shaped analemma, Mars' analemma is pear-shaped, because of its similar axial tilt but more elliptical orbit. When Mars is farther from the Sun, the Sun progresses slowly in the martian sky creating the pointy top of the curve. When close to the Sun and moving quickly, the apparent solar motion is stretched into the rounded bottom. For several sols some of the frames are missing due to rover operations and dust storms. http://www.planetary.org/multimedia/space-images/mars/mars-analemma-opportunity.html Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=140516 #APOD

APOD: Hubble's Jupiter and the Amazing Shrinking Great Red Spot (2014 May 17) Credit: NASA, ESA, and Amy Simon (Goddard Space Flight Center) et al. http://apod.nasa.gov/apod/ap140517.html Explanation: Gas giant Jupiter is the solar system's largest world with about 320 times the mass of planet Earth. It's also known for a giant swirling storm system, the Great Red Spot, featured in this sharp Hubble image from April 21. Nestled between Jupiter-girdling cloud bands, the Great Red Spot itself could still easily swallow Earth, but lately it has been shrinking. The most recent Hubble observations measure the spot to be about 10,250 miles (16,500 kilometers) across. That's the smallest ever measured by Hubble and particularly dramatic when compared to 14,500 miles measured by the Voyager 1 and 2 flybys in 1979, and historic telescopic observations from the 1800s indicating a width of about 25,500 miles on its long axis. Current indications are that the rate of shrinking is increasing for the long-lived Great Red Spot. http://hubblesite.org/news/2014/24 http://spacetelescope.org/news/heic1410/ Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=140517 #APOD

APOD: Meteors, Planes, and a Galaxy over Bryce Canyon (2014 May 19) Image Credit & Copyright: Dave Lane http://apod.nasa.gov/apod/ap140519.html Explanation: Sometimes land and sky are both busy and beautiful. The landscape pictured in the foreground encompasses Bryce Canyon in Utah, USA, famous for its many interesting rock structures eroded over millions of years. The skyscape above, photogenic in its own right, encompasses the arching central disk of our Milky Way Galaxy, streaks that include three passing airplanes and at least four Eta Aquariid meteors, and bright stars that include the Summer Triangle. The above image is a digital panorama created from 12 smaller images earlier this month on the night May 6. If you missed the recent Eta Aquariids meteor shower though, don't fret -- you may get an unexpected reprieve. Sky enthusiasts are waiting to see if a new meteor shower develops in the early morning hours of Saturday, May 24, when the Earth moves through a possibly dense cloud of dust and debris ejected by Comet 209P/LINEAR. Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=140519 #APOD

APOD: Jupiter's Great Red Spot from Voyager 1 (2014 May 18) Image Credit: NASA, JPL; Digital processing: Björn Jónsson (IAAA) http://apod.nasa.gov/apod/ap140518.html Explanation: What will become of Jupiter's Great Red Spot? Recorded as shrinking since the 1930s, the rate of the Great Red Spot's size appears to have accelerated just in the past few years. A hurricane larger than Earth, the Great Red Spot has been raging at least as long as telescopes could see it. Like most astronomical phenomena, the Great Red Spot was neither predicted nor immediately understood after its discovery. Although small eddies that feed into the storm system seem to play a role, a more full understanding of the gigantic storm cloud remains a topic of continued research, and may result in a better understanding of weather here on Earth. The above image is a digital enhancement of an image of Jupiter taken in 1979 by the Voyager 1 spacecraft as it zoomed by the Solar System's largest planet. NASA's Juno spacecraft is currently heading toward Jupiter and will arrive in 2016. http://www.nasa.gov http://www.jpl.nasa.gov/ http://www.mmedia.is/bjj/ http://iaaa.org/ Starship Asterisk* • APOD Discussion Page http://asterisk.apod.com/discuss_apod.php?date=140518 #APOD

Two Comets Visible in Telescopes This Month: Where to Look

Skywatchers have a chance to see two comets in May, one of which may spawn a spectacular "meteor storm" at the end of next week.<p>Comets PanSTARRS and …

Germs in the Gut May Affect Autism, Study Finds

Bacteria living in the intestines and colon may affect symptoms of autism by breaking down important message-carrying chemicals, researchers reported Monday.<p>They found that children with autism have a very different make-up when it comes to gut germs, compared to children without autism. More …

Deadly Tornadoes in Pictures

There's a Place in the Utah Desert Where People Pretend to Live on Mars

Outfitted in bright orange spacesuits and a full pack of oxygen, three astronauts push open the foot-thick door and step outside onto the rusty red …

A Question Of Biggitude: What's The Largest Creature On Earth?

What's the biggest living thing on Earth? I can think of two. I'm not sure which is biggest, but neither of them is a blue whale. These are weirder. Much, much weirder.<p>One is a tree. The other eats trees.<p>This is the tree.<p>Now, I know this looks like more than one tree. If you were counting, it looks …

Satellite eye on Earth: April 2014 – in pictures

Antarctica's crumbling glaciers, Argentina's guitar forest and a 621-mile dust storm over Sahara are among the images captured by European Space Agency and Nasa satellites

Fantastic Fungi: The Startling Visual Diversity of Mushrooms Photographed by Steve Axford | Colossal

<p>To think any one of these lifeforms exists in our galaxy, let alone on our planet, simply boggles the mind. Photographer Steve Axford lives and …

Researchers: The collapse of Greenland’s ice sheet could be a bigger disaster than we thought

The glaciers’ vulnerability to warming waters means current projections of sea level rise are likely too low<p>New, from the people who brought us the unstoppable collapse of the West Antarctic ice sheet: It turns out that Greenland's glaciers are more vulnerable to melting than was previously …

As heavy as 14 elephants, as long as 2 tractor trailers: Meet Mr. Titanosaur

They may be the biggest boys on any block -- any block, ever.<p>In fact, the dinosaurs unveiled Saturday by Argentina's Museo Paleontologico Egidio Feruglio may be the largest to grace the Earth. At about 130 feet (40 meters) long and 180,000 pounds (80,000 kilograms), it's no wonder, then, that these …