NASA’s Dawn spacecraft has become the first mission to achieve orbit around a dwarf planet. The spacecraft was approximately 38,000 miles (61,000) kilometers from Ceres when it was captured by the dwarf planet’s gravity at about 4:39 a.m. PST (7:39 a.m. EST) Friday, March 6.

This image of Ceres was taken by the Dawn spacecraft on March 1, just a few days before the mission achieved orbit around the previously unexplored world. The image shows Ceres as a crescent, mostly in shadow because the spacecraft’s trajectory put it on a side of Ceres that faces away from the sun until mid-April. When Dawn emerges from Ceres’ dark side, it will deliver ever-sharper images as it spirals to lower orbits around the planet.

The image was obtained at a distance of about 30,000 miles (about 48,000 kilometers) at a sun-Ceres-spacecraft angle, or phase angle, of 123 degrees. Image scale on Ceres is 1.9 miles (2.9 kilometers) per pixel. Ceres has an average diameter of about 590 miles (950 kilometers).

Dawn’s mission is managed by NASA’s Jet Propulsion Laboratory, Pasadena, California, for NASA’s Science Mission Directorate in Washington. Dawn is a project of the directorate’s Discovery Program, managed by NASA’s Marshall Space Flight Center in Huntsville, Alabama. The University of California, Los Angeles, is responsible for overall Dawn mission science. Orbital ATK Inc., in Dulles, Virginia, designed and built the spacecraft. The German Aerospace Center, the Max Planck Institute for Solar System Research, the Italian Space Agency and the Italian National Astrophysical Institute are international partners on the mission team. For a complete list of acknowledgments, http://ift.tt/1ALN8zu.

Image Credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA via NASA http://ift.tt/18XdC8i

NASA astronaut Scott Kelly is seen inside a Soyuz simulator at the Gagarin Cosmonaut Training Center (GCTC), Wednesday, March 4, 2015 in Star City, Russia. Kelly, along with Expedition 43 Russian cosmonaut Mikhail Kornienko of the Russian Federal Space Agency (Roscosmos), and Russian cosmonaut Gennady Padalka of Roscosmos were at GCTC for the second day of qualification exams in preparation for their launch to the International Space Station onboard a Soyuz TMA-16M spacecraft from the Baikonur Cosmodrome in Kazakhstan at 3:42 p.m. EST, March 27 (March 28, Kazakh time). As the one-year crew, Kelly and Kornienko will return to Earth on Soyuz TMA-18M in March 2016.Image Credit: NASA/Bill Ingalls via NASA http://ift.tt/1DPUyk4

From the International Space Station, European Space Agency astronaut Samantha Cristoforetti (@AstroSamantha) took this photograph of the island of Hawaii and posted it to social media on Feb. 28, 2015. Cristoforetti wrote, “And suddenly as we flew over the Pacific… the island of #Hawaii with its volcanoes! #HelloEarth”

Crewmembers on the space station photograph the Earth from their unique point of view located 200 miles above the surface as part of the Crew Earth Observations program. Photographs record how the planet is changing over time, from human-caused changes like urban growth and reservoir construction, to natural dynamic events such as hurricanes, floods and volcanic eruptions. Astronauts have used hand-held cameras to photograph the Earth for more than 40 years, beginning with the Mercury missions in the early 1960s. The ISS maintains an altitude between 220 – 286 miles (354 – 460 km) above the Earth, and an orbital inclination of 51.6˚, providing an excellent stage for observing most populated areas of the world.

Image Credit: NASA/ESA/Samantha Cristoforetti via NASA http://ift.tt/1zJxMrz

In this 1945 photo, test pilots (from left) Mel Gough, Herb Hoover, Jack Reeder, Steve Cavallo and Bill Gray stand in front of a P-47 Thunderbolt. The photo was taken at the then-named Langley Memorial Aeronautical Laboratory, which was a research facility for the National Advisory Committee for Aeronautics, or the NACA.

The NACA was the main institutional basis for creating NASA in 1958.

On March 3, 1915 – one hundred years ago — the U.S. Congress established the NACA in order “to supervise and direct the scientific study of the problems of flight with a view to their practical solution.” 

From humble beginnings with a $5000 budget, no paid staff and no facilities, the NACA won the Collier trophy five times. Its researchers made critical contributions to victory in World War II, spawned a world-leading civil aviation manufacturing industry, propelled supersonic flight, supported national security during the Cold War, and laid the foundation for modern air travel and the space age.

Learn more about the 100th anniversary of the founding of the NACA at http://www.nasa.gov/naca100.

Image Credit: NASA via NASA http://ift.tt/1EcSIyK

On Sunday, March 1, Expedition 42 Flight Engineer Terry Virts and Commander Barry “Butch” Wilmore ventured outside the International Space Station for their third spacewalk in eight days. Virts and Wilmore completed installing 400 feet of cable and several antennas associated with the Common Communications for Visiting Vehicles system known as C2V2. Boeing’s Crew Transportation System (CST)-100 and the SpaceX Crew Dragon will use the system in the coming years to rendezvous with the orbital laboratory and deliver crews to the space station.

Virts (@AstroTerry) tweeted this photograph and wrote, “Out on the P3 truss. #AstroButch handing me his cable to install on the new antenna. #spacewalk”

Image Credit: NASA via NASA http://ift.tt/1APuyYt

International Space Station astronaut Terry Virts (@AstroTerry) tweeted this image of a Vulcan hand salute from orbit as a tribute to actor Leonard Nimoy, who died on Friday, Feb. 27, 2015. Nimoy played science officer Mr. Spock in the Star Trek series that served as an inspiration to generations of scientists, engineers and sci-fi fans around the world.

Cape Cod and Boston, Massachusetts, Nimoy’s home town, are visible through the station window. via NASA http://ift.tt/1Anq0nv

In 1976, NASA’s space shuttle Enterprise rolled out of the Palmdale manufacturing facilities and was greeted by NASA officials and cast members from the ‘Star Trek’ television series.

From left to right they are: NASA Administrator Dr. James D. Fletcher; DeForest Kelley, who portrayed Dr. “Bones” McCoy on the series; George Takei (Mr. Sulu); James Doohan (Chief Engineer Montgomery “Scotty” Scott); Nichelle Nichols (Lt. Uhura); Leonard Nimoy (Mr. Spock); series creator Gene Roddenberry;  U.S. Rep. Don Fuqua (D.-Fla.); and, Walter Koenig (Ensign Pavel Chekov).

NASA is mourning the passing today, Feb. 27, 2015, of actor Leonard Nimoy, most famous for his role as Star Trek’s Vulcan science officer Mr. Spock. The sci-fi classic served as an inspiration for many at NASA over the years, and Nimoy joined other cast members at special NASA events and worked to promote NASA missions, as in this 2007 video he narrated before the launch of the Dawn mission to the asteroid belt. Nimoy also was there for the 1976 rollout of the shuttle Enterprise, named for the show’s iconic spacecraft.

Image Credit: NASA via NASA http://ift.tt/1E02BhF

The galaxy pictured here is NGC 4424, located in the constellation of Virgo. It is not visible with the naked eye but has been captured here with the NASA/ESA Hubble Space Telescope.

Although it may not be obvious from this image, NGC 4424 is in fact a spiral galaxy. In this image it is seen more or less edge on, but from above, you would be able to see the arms of the galaxy wrapping around its center to give the characteristic spiral form.

In 2012, astronomers observed a supernova in NGC 4424 — a violent explosion marking the end of a star’s life. During a supernova explosion, a single star can often outshine an entire galaxy. However, the supernova in NGC 4424, dubbed SN 2012cg, cannot be seen here as the image was taken ten years prior to the explosion. Along the central region of the galaxy, clouds of dust block the light from distant stars and create dark patches.

To the left of NGC 4424 there are two bright objects in the frame. The brightest is another, smaller galaxy known as LEDA 213994 and the object closer to NGC 4424 is an anonymous star in our Milky Way.

European Space Agency

Credit: ESA/Hubble & NASA, Acknowledgement: Gilles Chapdelaine via NASA http://ift.tt/1AhhOFb

Apollo-Saturn 201 (AS-201), the first Saturn IB launch vehicle developed by NASA’s Marshall Space Flight Center (MSFC), lifts off from Cape Canaveral, Florida, at 11:12 a.m. on Feb. 26, 1966. The AS-201 mission was an unmanned suborbital flight to test the Saturn 1B launch vehicle and the Apollo Command and Service Modules. This was the first flight of the S-IB and S-IVB stages, including the first flight test of the liquid-hydrogen/liquid oxygen-propelled J-2 engine in the S-IVB stage. During the thirty-seven minute flight, the vehicle reached an altitude of 303 miles and traveled 5,264 miles downrange.

Image Credit: NASA via NASA http://ift.tt/1LMExl9

From the International Space Station (ISS), European Space Agency astronaut Samantha Cristoforetti took this photograph of Chicago and posted it to social media on Feb. 19, 2015. She wrote, “How do you like #Chicago dressed for winter?”

Crewmembers on the space station photograph the Earth from their unique point of view located 200 miles above the surface as part of the Crew Earth Observations program. Photographs record how the planet is changing over time, from human-caused changes like urban growth and reservoir construction, to natural dynamic events such as hurricanes, floods and volcanic eruptions. Astronauts have used hand-held cameras to photograph the Earth for more than 40 years, beginning with the Mercury missions in the early 1960s. The ISS maintains an altitude between 220 – 286 miles (354 – 460 km) above the Earth, and an orbital inclination of 51.6˚, providing an excellent stage for observing most populated areas of the world.

Image Credit: NASA/ESA/Samantha Cristoforetti via NASA http://ift.tt/1wdNNpq