Liftoff at NASA's 16th Annual Student Launch Challenge
One of dozens of high-powered rockets lifts off on April 16, 2016, during NASA's 16th annual Student Launch challenge, held near Marshall Space Flight Center in Huntsville, Alabama from April 13-16. Nearly 50 middle and high school, college and university teams from 22 states competed in the challenge. (More at NASA Picture of The Day)
Preparing the Vehicle Assembly Building for NASA's Next Rocket
A view from below in High Bay 3 inside the Vehicle Assembly Building at NASA’s Kennedy Space Center shows three work platforms installed for NASA’s Space Launch System (SLS) rocket. The platforms will surround and provide access to the SLS rocket and Orion spacecraft for Exploration Mission 1. (More at NASA Picture of The Day)
Development of High-Power Solar Electric Propulsion
A prototype 13-kilowatt Hall thruster is tested at NASA's Glenn Research Center in Cleveland. This prototype demonstrated the technology readiness needed for industry to continue the development of high-power solar electric propulsion into a flight-qualified system. (More at NASA Picture of The Day)
This Earth observation composite image from the International Space Station captures morning sunglint and low clouds over the central Pacific Ocean. The image was put together at the Johnson Space Center in Houston, from a series of photographs taken by Expedition 47 Commander Jeff Williams on March 25, 2016. (More at NASA Picture of The Day)
The Operational Land Imager (OLI) on NASA's Landsat 8 satellite acquired this large natural-color image showing a wide view of the Caspian Sea around the Tyuleniy Archipelago on April 16, 2016. Ocean scientist Norman Kuring of NASA’s Goddard Space Flight Center found a puzzling feature in the image -- lines crisscrossing the North Caspian Sea. (More at NASA Picture of The Day)
This illustration shows a star surrounded by a protoplanetary disk. A new study uses data from NASA's Spitzer Space Telescope and four ground-based telescopes to determine the distance from a star to the inner rim of its surrounding protoplanetary disk. Researchers used a method called "photo-reverberation," also known as "light echoes. (More at NASA Picture of The Day)
This mid-afternoon, 360-degree panorama was acquired by the Mast Camera (Mastcam) on NASA's Curiosity Mars rover on April 4, 2016, as part of long-term campaign to document the context and details of the geology and landforms along Curiosity's traverse since landing in August 2012. (More at NASA Picture of The Day)
Orion Crew Module for Exploration Mission-1 Lifted to Test Stand
The Orion spacecraft crew module for Exploration Mission-1 (EM-1) is lifted into a test stand for pressure testing in the Neil Armstrong Operations & Checkout Building at NASA’s Kennedy Space Center. The work is an important milestone on Orion’s journey toward EM-1, its mission beyond the moon atop the Space Launch System rocket in 2018. (More at NASA Picture of The Day)
Inside the clean room at NASA's Goddard Space Flight Center, the golden James Webb Space Telescope is viewed from overhead with its secondary mirror booms stowed. In the next few months, engineers will install other key elements, and take additional measurements to ensure the telescope is ready for space. (More at NASA Picture of The Day)
The water-world Enceladus appears here to sit atop Saturn's rings like a drop of dew upon a leaf. Even though it appears like a tiny drop before the might of the giant Saturn, Enceladus reminds us that even small worlds hold mysteries and wonders to be explored. (More at NASA Picture of The Day)
Expedition 47 Flight Engineer Jeff Williams of NASA captured this detailed photograph from the International Space Station during a daytime flyover of Morocco on May 2, 2016. Williams shared the image to social media and asked, "Reptile scales, or incredible and rugged geology in Morocco?" (More at NASA Picture of The Day)
The Nili Fossae region, located on the northwest rim of Isidis impact basin, is one of the most colorful regions of Mars. This region is ancient and has had a complicated geologic history, leading to interesting structures like layered bedrock, as well as other compositions. (More at NASA Picture of The Day)
May 5, 1961, Alan Shepard in Spacesuit Before Mercury Launch
Astronaut Alan B. Shepard Jr., in his silver pressure suit with the helmet visor closed, prepares for his Mercury Redstone 3 launch on May 5, 1961. Shepard's Freedom 7 Mercury capsule lifted off at 9:34 a.m. and flew a suborbital trajectory lasting 15 minutes and 22 seconds. He became the first American to fly into space. (More at NASA Picture of The Day)
Shown in this Hubble Space Telescope image, NGC 4394 is the archetypal barred spiral galaxy, with bright spiral arms emerging from the ends of a bar that cuts through the galaxy’s central bulge. These arms are peppered with young blue stars, dark filaments of cosmic dust, and bright, fuzzy regions of active star formation. (More at NASA Picture of The Day)
The planet Mercury is seen in silhouette, lower third of image, as it transits across the face of the sun Monday, May 9, 2016, as viewed from Boyertown, Pennsylvania. Mercury passes between Earth and the sun only about 13 times a century, with the previous transit taking place in 2006. (More at NASA Picture of The Day)
NASA's Aqua satellite captured this image of the clouds over Canada on May 9, 2016. Entwined within the clouds is the smoke billowing up from the wildfires that are currently burning across a large expanse of the country. (More at NASA Picture of The Day)
Full of Science, Dragon Spacecraft Undocks for Return to Earth
ESA astronaut Tim Peake photographed the SpaceX Dragon cargo craft as it undocked from the International Space Station on May 11, 2016. Scheduled to splashdown in the Pacific Ocean at 2:55 p.m. EDT, the spacecraft will return the final batch of human research samples from former NASA astronaut Scott Kelly’s historic one-year mission. (More at NASA Picture of The Day)
NASA's IceBridge Flies Over the Front of a Greenland Glacier
Operation IceBridge, NASA's airborne survey of polar ice, has returned from the Umanaq B mission along Greenland's western coast. This top-down view from a NOAA P-3 aircraft shows the calving front of Sermeq Kujatdleq glacier. The Naircraft's #2 lower engine nacelle and left main landing gear fairing is in the foreground at top. (More at NASA Picture of The Day)
Together with irregular galaxies, spiral galaxies make up approximately 60 percent of the galaxies in the local universe. However, despite their prevalence, each spiral galaxy is unique — like snowflakes, no two are alike. This is demonstrated by the striking face-on spiral galaxy NGC 6814. (More at NASA Picture of The Day)
