Potentially Habitable Moons
Image Credit: Research and compilation - René Heller (McMaster Univ.) et al.
Panels - NASA/JPL/Space Science Institute/Ted Stryk
Explanation: For astrobiologists, these may be the four most tantalizing moons in our Solar System. Shown at the same scale, their exploration by interplanetary spacecraft has launched the idea that moons, not just planets, could have environments supporting life. The Galileo mission to Jupiter discovered Europa’s global subsurface ocean of liquid water and indications of Ganymede’s interior seas. At Saturn, the Cassini probe detected erupting fountains of water ice from Enceladus indicating warmer subsurface water on even that small moon, while finding surface lakes of frigid but still liquid hydrocarbons beneath the dense atmosphere of large moon Titan. Now looking beyond the Solar System, new research suggests that sizable exomoons, could actually outnumber exoplanets in stellar habitable zones. That would make moons the most common type of habitable world in the Universe.
Potentially Habitable Moons
Aurora over Maine
Image Credit & Copyright: Jeremy P. Gray
Explanation: It has been a good week for auroras. Earlier this month active sunspot region 2158 rotated into view and unleashed a series of flares and plasma ejections into the Solar System during its journey across the Sun’s disk. In particular, a pair of Coronal Mass Ejections (CMEs) impacted the Earth’s magnetosphere toward the end of last week, creating the most intense geomagnetic storm so far this year. Although power outages were feared by some, the most dramatic effects of these impacting plasma clouds were auroras seen as far south as Wisconsin, USA. In the featured image taken last Friday night, rays and sheets of multicolored auroras were captured over Acadia National Park, in Maine, USA. Since another CME plasma cloud is currently approaching the Earth, tonight offers another good chance to see an impressive auroral display.
From NASA Administrator Charlie Bolden’s Blog :
Today, with the selection of Boeing and SpaceX to be the first American companies to launch our astronauts to the International Space Station, NASA has set the stage for what promises to be the most ambitious and exciting chapter in the history of human space flight.
From day one, the Obama Administration has made it clear that the greatest nation on Earth should not be dependent on other nations to get into space. Thanks to the leadership of President Obama and the hard work of our NASA and industry teams, today we are one step closer to launching our astronauts from U.S. soil on American spacecraft and ending the nation’s sole reliance on Russia by 2017. Turning over low-Earth orbit transportation to private industry also will allow NASA to focus on an even more ambitious mission – sending humans to Mars.
#nasa #explore #usa
Life is not always full of rainbows and everyone has their bad days. Unfortunately, sometimes that frustration is taken out on our children and we say things to them that we later regret deeply. This video below shows us just how powerful verbal abuse can affect our kids.