“James Webb Space Telescope's Golden Mirror” was uploaded to Flickr

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. via NASA ift.tt/1O0fSJy
embiggen by clicking http://flic.kr/p/FLY9FU
James Webb Space Telescope's Golden Mirror was taken on April 27, 2016 at 02:09PM

“Orion Crew Module for Exploration Mission-1 Lifted to Test Stand” was uploaded to Flickr

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. via NASA ift.tt/1NX1IZI
embiggen by clicking http://flic.kr/p/FKvURC
Orion Crew Module for Exploration Mission-1 Lifted to Test Stand was taken on April 21, 2016 at 09:17AM

“Full-Circle Vista from 'Naukluft Plateau' on Mars” was uploaded to Flickr

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. via NASA ift.tt/1T4XSz6
embiggen by clicking http://flic.kr/p/FJdoMi
Full-Circle Vista from 'Naukluft Plateau' on Mars was taken on April 27, 2016 at 05:08AM

“Light Echoes Used to Study Protoplanetary Disks” was uploaded to Flickr

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. via NASA ift.tt/26rHbbb
embiggen by clicking http://flic.kr/p/GzzYAN
Light Echoes Used to Study Protoplanetary Disks was taken on April 25, 2016 at 07:36AM

“Ice Scours the North Caspian Sea” was uploaded to Flickr

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. via NASA ift.tt/1SnBS6G
embiggen by clicking http://flic.kr/p/GxMVh1
Ice Scours the North Caspian Sea was taken on April 25, 2016 at 05:47AM

“Ice Scours the North Caspian Sea” was uploaded to Flickr

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. via NASA ift.tt/1SnBS6G
embiggen by clicking http://flic.kr/p/GxMVh1
Ice Scours the North Caspian Sea was taken on April 25, 2016 at 05:47AM

Morning Sunglint Over the Pacific was uploaded to Flickr

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. via NASA ift.tt/1SgYGou embiggen by clicking http://flic.kr/p/GuEVmv Morning Sunglint Over the Pacific was taken on March 25, 2016 at 02:53PM

Development of High-Power Solar Electric Propulsion was uploaded to Flickr

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. via NASA ift.tt/1VE9BLL embiggen by clicking http://flic.kr/p/GqEWUL Development of High-Power Solar Electric Propulsion was taken on March 06, 2015 at 11:18AM

Preparing the Vehicle Assembly Building for NASA's Next Rocket was uploaded to Flickr

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. via NASA ift.tt/1Qn5o6T embiggen by clicking http://flic.kr/p/GkHGGr Preparing the Vehicle Assembly Building for NASA's Next Rocket was taken on April 15, 2016 at 08:16AM

Liftoff at NASA's 16th Annual Student Launch Challenge was uploaded to Flickr

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. via NASA ift.tt/1Sqtl1r embiggen by clicking http://flic.kr/p/Gj4yE6 Liftoff at NASA's 16th Annual Student Launch Challenge was taken on April 16, 2016 at 06:21AM

“Y Marks the Spot” was uploaded to Flickr

A sinuous feature snakes northward from Enceladus' south pole like a giant tentacle. via NASA ift.tt/1TeVHMe
embiggen by clicking http://flic.kr/p/GkQ8pW
Y Marks the Spot was taken on April 14, 2016 at 12:38PM

“Early Ice Breakup of Beaufort Sea Due to Early Warm Temperatures” was uploaded to Flickr

This image of early ice breakup of the Beaufort Sea, north of Alaska, was taken by the Suomi NPP satellite's Visible Infrared Imaging Radiometer Suite (VIIRS) instrument infrared channel, at around 1148 UTC on April 13, 2016. via NASA ift.tt/1Vq8z5q
embiggen by clicking http://flic.kr/p/FSNk35
Early Ice Breakup of Beaufort Sea Due to Early Warm Temperatures was taken on April 15, 2016 at 05:34AM

“April 14, 1981, Landing of First Space Shuttle Mission” was uploaded to Flickr

The rear wheels of the space shuttle orbiter Columbia touched down on Rogers dry lake at Edwards Air Force Base, NASA's Armstrong Flight Research Center (then Dryden), California, to successfully complete a stay in space of more than two days. Astronauts John W. Young, STS-1 commander, and Robert L. Crippen, pilot, were aboard the vehicle. via NASA ift.tt/1TTGD8R
embiggen by clicking http://flic.kr/p/FRd79o
April 14, 1981, Landing of First Space Shuttle Mission was taken on August 22, 2008 at 09:37AM

“Night Image of Chicago” was uploaded to Flickr

Expedition 47 Commander Tim Kopra of NASA captured this brightly lit night image of the city of Chicago on April 5, 2016, from the International Space Station. Kopra (@astro_tim) wrote, "#Goodnight #Chicago from @Space_Station. #CitiesFromSpace" via NASA ift.tt/1VVgFSw
embiggen by clicking http://flic.kr/p/Fjtna4
Night Image of Chicago was taken on April 05, 2016 at 02:17AM

“T-38C Passes in Front of the Sun at Supersonic Speed” was uploaded to Flickr

An Air Force Test Pilot School T-38C passes in front of the sun at a supersonic speed, creating shockwaves that are caught photographically for research. NASA is using a modern version of schlieren imagery to visualize supersonic flow phenomena with full-scale aircraft in flight. The results will help engineers design a quiet supersonic transport. via NASA ift.tt/1YrJhlF
embiggen by clicking http://flic.kr/p/FhKUmn
T-38C Passes in Front of the Sun at Supersonic Speed was taken on April 05, 2016 at 08:43AM

“The Great Divide” was uploaded to Flickr

It's difficult to get a sense of scale when viewing Saturn's rings, but the Cassini Division (seen here between the bright B ring and dimmer A ring) is almost as wide as the planet Mercury. via NASA ift.tt/1ROQuvB
embiggen by clicking http://flic.kr/p/G38ME3
The Great Divide was taken on April 08, 2016 at 11:51AM

“Busy Traffic at the International Space Station” was uploaded to Flickr

Expedition 47 Flight Engineer Tim Peake of ESA took this photograph on April 6, 2016, as the International Space Station flew over Madagascar, showing three of the five spacecraft docked to the station. The station crew awaits the scheduled launch today, April 8, of the third resupply vehicle in three weeks: a SpaceX Dragon cargo spacecraft. via NASA ift.tt/1SEPqqq
embiggen by clicking http://flic.kr/p/G5TS7n
Busy Traffic at the International Space Station was taken on April 03, 2016 at 07:58AM

“April 7, 1991, Deployment of Breakthrough Gamma-ray Observatory” was uploaded to Flickr

Twenty-five years ago, NASA launched the Compton Gamma Ray Observatory, an astronomical satellite that transformed our knowledge of the high-energy sky. In this view, taken on April 7, 1991, from the aft flight deck window of space shuttle Atlantis, the Compton Gamma Ray Observatory is released by the shuttle's remote manipulator system. via NASA ift.tt/23lAYLv
embiggen by clicking http://flic.kr/p/FDm9F3
April 7, 1991, Deployment of Breakthrough Gamma-ray Observatory was taken on July 07, 2009 at 10:17AM

“Computer-Simulated Image of a Supermassive Black Hole” was uploaded to Flickr

Astronomers have uncovered a near-record breaking supermassive black hole in an unlikely place: in the center of a galaxy in a sparsely populated area of the universe. The observations, made by NASA’s Hubble Space Telescope and the Gemini Telescope in Hawaii, may indicate that these monster objects may be more common than once thought. via NASA ift.tt/1UWtvRX
embiggen by clicking http://flic.kr/p/FBLPxq
Computer-Simulated Image of a Supermassive Black Hole was taken on April 05, 2016 at 11:35AM

“The Turbulent North Atlantic” was uploaded to Flickr

The Gulf Stream waters flow in somewhat parallel layers, slicing across what is otherwise a fairly turbulent western North Atlantic Ocean in this March 9, 2016 image collected by the Visible Infrared Imaging Radiometer Suite on NASA-NOAA's Suomi NPP satellite. The turbulence is made visible by the pigmented phytoplankton it entrains. via NASA ift.tt/1YdApQo
embiggen by clicking http://flic.kr/p/FA1byu
The Turbulent North Atlantic was taken on April 05, 2016 at 05:41AM

“Moonset Viewed From the International Space Station” was uploaded to Flickr

Expedition 47 Flight Engineer Tim Peake of ESA took this striking photograph of the moon from his vantage point aboard the International Space Station on March 28, 2016. Peake shared the image on March 30 and wrote to his social media followers, "I was looking for #Antarctica – hard to spot from our orbit. Settled for a moonset instead." via NASA ift.tt/1RIC6kY
embiggen by clicking http://flic.kr/p/FVRLm3
Moonset Viewed From the International Space Station was taken on March 28, 2016 at 09:47AM

“Orion Spacecraft Suited Crew Testing” was uploaded to Flickr

Engineers at NASA's Johnson Space Center in Houston are evaluating how crews inside a mockup of the Orion spacecraft interact with the rotational hand controller and cursor control device while inside their Modified Advanced Crew Escape spacesuits. via NASA ift.tt/1RPYvMc
embiggen by clicking http://flic.kr/p/EXo9Zt
Orion Spacecraft Suited Crew Testing was taken on March 24, 2016 at 06:10AM