NASA Day of Remembrance

Martha Chaffee, widow of Roger Chaffee, Sheryl Chaffee, daughter, and Roger Purvenas, son of Sheryl Chaffee, left, along with acting NASA Administrator Robert Lightfoot, right, place wreaths at the graves of Apollo 1 crewmembers Virgil "Gus" Grissom and Roger Chaffee as part of NASA's Day of Remembrance, Tuesday, Jan. 31, 2017. via NASA http://ift.tt/2jrXp4C

Coy Dione

Dione's lit hemisphere faces away from Cassini's camera, yet the moon's darkened surface features are dimly illuminated in this image, due to Saturnshine. via NASA http://ift.tt/2jKX6jK

Apollo 1 Crew Honored

Astronauts, from the left, Gus Grissom, Ed White II and Roger Chaffee stand near Cape Kennedy's Launch Complex 34 during training for Apollo 1 in January 1967. via NASA http://ift.tt/2jmBGpA

January 1986 - Voyager 2 Flyby of Miranda

Uranus' moon Miranda is shown in a computer-assembled mosaic of images obtained Jan. 24, 1986, by the Voyager 2 spacecraft. Miranda is the innermost and smallest of the five major Uranian satellites, just 480 kilometers (about 300 miles) in diameter. Nine images were combined to obtain this full-disc, south-polar view. via NASA http://ift.tt/2jBNLIN

Juno’s Close Look at a Little Red Spot

The JunoCam imager on NASA’s Juno spacecraft snapped this shot of Jupiter’s northern latitudes. via NASA http://ift.tt/2jSCIf5

NASA Simulates Orion Spacecraft Launch Conditions for Crew

In a lab at NASA’s Johnson Space Center in Houston, engineers simulated conditions that astronauts in space suits would experience when the Orion spacecraft is vibrating during launch atop the agency’s powerful Space Launch System rocket on its way to deep space destinations. via NASA http://ift.tt/2jmqQmU

New Weather Satellite Sends First Images of Earth

The release of the first images today from NOAA’s newest satellite, GOES-16, is the latest step in a new age of weather satellites. This composite color full-disk visible image is from 1:07 p.m. EDT on Jan. 15, 2017, and was created using several of the 16 spectral channels available on the GOES-16 Advanced Baseline Imager (ABI) instrument. via NASA http://ift.tt/2k994lm

Daphnis Up Close

The wavemaker moon, Daphnis, is featured in this view, taken as NASA's Cassini spacecraft made one of its ring-grazing passes over the outer edges of Saturn's rings on Jan. 16, 2017. via NASA http://ift.tt/2jPxlwA

Possible Signs of Ancient Drying in Martian Rock

A grid of small polygons on the Martian rock surface near the right edge of this view may have originated as cracks in drying mud more than 3 billion years ago. via NASA http://ift.tt/2jzvy1d

NASA Astronaut Shane Kimbrough on Jan. 13 Spacewalk

Expedition 50 Commander Shane Kimbrough of NASA at work outside the International Space Station on Jan. 13, 2017, in a photo taken by fellow spacewalker Thomas Pesquet of ESA. The two astronauts successfully installed three new adapter plates and hooked up electrical connections for three of the six new lithium-ion batteries on the station. via NASA http://ift.tt/2iDoegW

Crescent Jupiter with the Great Red Spot

This image of a crescent Jupiter and the iconic Great Red Spot was created by a citizen scientist (Roman Tkachenko) using data from Juno's JunoCam instrument. via NASA http://ift.tt/2iQA9sp

Well-Preserved Impact Ejecta on Mars

This image of a well-preserved unnamed elliptical crater in Terra Sabaea, is illustrative of the complexity of ejecta deposits forming as a by-product of the impact process that shapes much of the surface of Mars. via NASA http://ift.tt/2jct7C2

Crescent Jupiter with the Great Red Spot

This image of a crescent Jupiter and the iconic Great Red Spot was created by a citizen scientist (Roman Tkachenko) using data from Juno's JunoCam instrument. via NASA http://ift.tt/2jIQYK5

NASA Astronaut Peggy Whitson's 7th Spacewalk

NASA Astronaut Peggy Whitson's 7th Spacewalk via NASA http://ift.tt/2j1dn27

Rocky Mountains From Orbit

Expedition 50 Flight Engineer Thomas Pesquet of the European Space Agency photographed the Rocky Mountains from his vantage point in low Earth orbit aboard the International Space Station. He shared the image with his social media followers on Jan. 9, 2017, writing, "the Rocky mountains are a step too high – even for the clouds to cross." via NASA http://ift.tt/2j1assn

Breaking Boundaries in New Engine Designs

In an effort to improve fuel efficiency, NASA and the aircraft industry are rethinking aircraft design. via NASA http://ift.tt/2i907Go

Earth and Its Moon, as Seen From Mars

Here is a view of Earth and its moon, as seen from Mars. It combines two images acquired on Nov. 20, 2016, by the HiRISE camera on NASA's Mars Reconnaissance Orbiter, with brightness adjusted separately for Earth and the moon to show details on both bodies. via NASA http://ift.tt/2jk2xr1

Abell 3411 and Abell 3412: Astronomers Discover Powerful Cosmic Double Whammy

Astronomers have discovered what happens when the eruption from a supermassive black hole is swept up by the collision and merger of two galaxy clusters. via NASA http://ift.tt/2j8Bv1u

Hues in a Crater Slope

Impact craters expose the subsurface materials on the steep slopes of Mars. However, these slopes often experience rockfalls and debris avalanches that keep the surface clean of dust, revealing a variety of hues, like in this enhanced-color image from NASA's Mars Reconnaissance Orbiter, representing different rock types. via NASA http://ift.tt/2iDXvCA

Send in the Clouds

Floating high above the hydrocarbon lakes, wispy clouds have finally started to return to Titan's northern latitudes. via NASA http://ift.tt/2hNAyzD