On June 18, 1983, Sally Ride became the first American woman in space and the youngest astronaut at 32. Ride logged a total of 344 hours in space between two flights on board the Space Shuttle Challenger in 1983 and 1984, and remains the youngest astronaut ever. Since Ride’s landmark flight thirty years ago, 44 more American women have become astronauts and flown to space. Ride who passed away last July was an inspiration to all who dreamed of becoming astronauts and for women interested in science. Sunday was also the 50th anniversary of the female Soviet Cosmonaut Valentina Tereskova’s three-day space flight.
Today’s anniversary is accompanied by milestone NASA news. This week NASA announced the 2013 Astronaut Candidate Class and for the first time ever half of the candidates are women. The eight candidates were chosen from over 6,100 applicants—-the second largest application pool in NASA history. The female astronaut candidates are Christina M. Hammock, NOAA Station Chief; Nicole Aunapu Mann, U.S. Marine Corps Major; Anne C. McClain, U.S. Army Major; and Jessica U. Meir, Assistant Professor at Harvard Medical School.
Learn more about the 2013 Astronaut Candidate Class.







![NASA is set to launch a brand new solar observation satellite later this month—known as IRIS—with the goal of observing an enigmatic area of our sun known as the interface region.The interface region—sometimes called the lower atmosphere— of the Sun plays a key role in intensifying the heat of the Sun’s upper atmosphere, or corona. How the interface region accomplishes this is relatively unknown, so IRIS aims to solve this mystery by tracing the path of solar energy and plasma from lower levels like the chromosphere, through the interface region, and finally to the corona.IRIS—short for Interface Region Imaging Spectrograph—will be launched on June 26th via a Pegasus XL rocket from the back of an Orbital Sciences L-1011 aircraft, flown from Vandenberg Air Force Base in California.The satellite itself stands at seven feet tall and carries an ultraviolet telescope which feeds into a multi-channel imaging spectrograph. IRIS’ hardware will allow it to obtain high-res images and spectra of areas as small as 150 mile across, smaller than any current solar observation satellite. Being able to pinpoint areas in the interface region during its two-year prime mission will allow for vast increase in understanding of solar activity, as Jeffrey Newmark of NASA states:“IRIS data will fill a crucial gap in our understanding of the solar interface region upon joining our fleet of heliophysics spacecraft…For the first time we will have the necessary observations for understanding how energy is delivered to the million-degree outer solar corona and how the base of the solar wind is driven.”Understanding more about the interface region will allow scientists to better predict and analyze solar flares and coronal mass ejections—phenomena that have vast implications to technology and life on Earth. As Carl Sagan once said, “understanding is a joy, [and] knowledge is prerequisite to survival”. NASA continues to push humanity’s understanding forward, so let’s keep up the support of their discoveries!Take action and show your support of NASA at our website! http://www.penny4nasa.org/take-action/Read more about IRIS: http://goo.gl/gTmgY](http://25.media.tumblr.com/51223f5ed33bf378d2150f9b43bcaf43/tumblr_mo7k278E0m1rxiqe4o1_1280.jpg)
