Following the light of the sun, we left the Old World.

— Inscription on Columbus' caravels

NASA Image of the Day

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The latest NASA "Image of the Day" image.
Updated: 13 hours 30 min ago

Hubble Uses Gravitational Lens to Capture Disk Galaxy

Fri, 06/23/2017 - 11:01am
By combining the power of a "natural lens" in space with the capability of NASA's Hubble Space Telescope, astronomers made a surprising discovery—the first example of a compact yet massive, fast-spinning, disk-shaped galaxy that stopped making stars only a few billion years after the big bang.
Categories: Astronomy, NASA

The White Cliffs of 'Rover'

Thu, 06/22/2017 - 11:38am
This image was acquired by the High Resolution Imaging Science Experiment (HiRISE) camera aboard NASA's Mars Reconnaissance Orbiter on April 18, 2017, at 14:04 local Mars time. It reminded the HiRISE team of the rugged and open terrain of a stark shore-line, perhaps of the British Isles.
Categories: Astronomy, NASA

Visualization of the August 21, 2017 Total Solar Eclipse

Wed, 06/21/2017 - 10:05am
On August 21, 2017, the Earth will cross the shadow of the moon, creating a total solar eclipse. Eclipses happen about every six months, but this one is special. For the first time in almost 40 years, the path of the moon's shadow passes through the continental United States.
Categories: Astronomy, NASA

Deployment of the Space Station's Roll Out Solar Array Experiment

Tue, 06/20/2017 - 11:46am
Over the weekend of June 17-18, engineers on the ground remotely operated the International Space Station's Canadarm2 to extract the Roll Out Solar Array experiment from the SpaceX Dragon resupply ship. The experiment will remain attached to the Canadarm2 over seven days to test this advanced, flexible array that rolls out like a tape measure.
Categories: Astronomy, NASA

Webb Telescope Set for Testing in Space Simulation Chamber

Mon, 06/19/2017 - 9:36am
NASA’s James Webb Space Telescope sits in front of the door to Chamber A, a giant thermal vacuum chamber located at NASA’s Johnson Space Center. The telescope will soon be moved into the chamber, where it will spend a hot Houston summer undergoing tests at sub-freezing cryogenic temperatures.
Categories: Astronomy, NASA

Jupiter’s Clouds of Many Colors

Fri, 06/16/2017 - 8:22am
NASA’s Juno spacecraft was racing away from Jupiter following its seventh close pass of the planet when JunoCam snapped this image on May 19, 2017, from about 29,100 miles (46,900 kilometers) above the cloud tops.
Categories: Astronomy, NASA

Northern Summer on Titan

Thu, 06/15/2017 - 8:59am
NASA's Cassini spacecraft sees bright methane clouds drifting in the summer skies of Saturn's moon Titan, along with dark hydrocarbon lakes and seas clustered around the north pole.
Categories: Astronomy, NASA

Celebrating Flag Day

Wed, 06/14/2017 - 3:52pm
NASA astronaut Jack Fischer took this photograph of an American flag in one of the windows of the International Space Station's cupola, a dome-shaped module through which operations on the outside of the station can be observed and guided. Throughout NASA's history, spacecraft and launch vehicles have always been decorated with flags.
Categories: Astronomy, NASA

Illustration of Cool Dust Around an Active Black Hole

Tue, 06/13/2017 - 2:10pm
This artist illustration shows the thick ring of dust that can obscure the energetic processes that occur near the supermassive black hole of an active galactic nuclei. Researchers have found that the dust surrounding active, ravenous black holes is much more compact than previously thought.
Categories: Astronomy, NASA

Turquoise Swirls in the Black Sea

Mon, 06/12/2017 - 11:55am
On May 29, 2017, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured the data for this image of an ongoing phytoplankton bloom in the Black Sea. The image is a mosaic, composed from multiple satellite passes over the region.
Categories: Astronomy, NASA

Pongal Catena on Ceres

Fri, 06/09/2017 - 11:48am
This image from NASA's Dawn spacecraft shows the northeastern rim of Urvara Crater on Ceres.
Categories: Astronomy, NASA

Watching a Volatile Stellar Relationship

Thu, 06/08/2017 - 6:55am
In biology, “symbiosis” refers to two organisms that live close to and interact with one another. Astronomers have long studied a class of stars – called symbiotic stars – that co-exist in a similar way. Astronomers are gaining a better understanding of how volatile this close stellar relationship can be.
Categories: Astronomy, NASA

NASA's 2017 Astronaut Candidates

Wed, 06/07/2017 - 12:27pm
NASA's 2017 astronaut candidates take a group photo at Ellington Field near Johnson Space Center. Pictured are, front row, left to right, Zena Cardman, Jasmin Moghbeli, Robb Kulin, Jessica Watkins, Loral O'Hara; back row, left to right, Jonny Kim, Frank Rubio, Matthew Dominick, Warren Hoburg, Kayla Barron, Bob Hines, and Raja Chari.
Categories: Astronomy, NASA

An Astronaut's View From the 'Corner Office'

Tue, 06/06/2017 - 11:13am
NASA astronaut Jack Fischer tweeted this photograph from the International Space Station on June 3, 2017, writing, "Never had a corner office with a view, but I must admit, I like it… a lot! #SpaceRocks." Fischer, a member of the 2009 astronaut class, has been living and working aboard the orbiting laboratory since April 20, 2017.
Categories: Astronomy, NASA

Mimas Dwarfed

Mon, 06/05/2017 - 12:59pm
From high above Saturn's northern hemisphere, NASA's Cassini spacecraft gazes over the planet's north pole, with its intriguing hexagon and bullseye-like central vortex.
Categories: Astronomy, NASA

SpaceX CRS-11 Cargo Mission Launch

Sat, 06/03/2017 - 6:35pm
The SpaceX Falcon 9 rocket, with the Dragon spacecraft onboard, launches from pad 39A at NASA’s Kennedy Space Center in Cape Canaveral, Florida, Saturday, June 3, 2017.
Categories: Astronomy, NASA

A South Polar Pit or an Impact Crater?

Fri, 06/02/2017 - 7:32am
This observation from NASA's Mars Reconnaissance Orbiter show it is late summer in the Southern hemisphere, so the Sun is low in the sky and subtle topography is accentuated in orbital images.
Categories: Astronomy, NASA

Eleventh SpaceX Commercial Resupply Mission to Space Station Set for Launch

Thu, 06/01/2017 - 11:07am
The SpaceX Falcon 9 rocket, with the Dragon spacecraft onboard, is seen shortly after being raised vertical at Launch Complex 39A at NASA’s Kennedy Space Center in Cape Canaveral, Florida, Thursday, June 1, 2017. Liftoff is scheduled for 5:55 p.m EDT.
Categories: Astronomy, NASA

Space Station's View of Florida at Night

Wed, 05/31/2017 - 12:22pm
Expedition 51 Flight Engineer Thomas Pesquet captured this nighttime photo of Florida from the International Space Station. Bright lights include the Miami-Fort Lauderdale area, and Orlando, with Cape Canaveral to the east, where launch preparations for SpaceX's next cargo mission are underway at NASA's Kennedy Space Center.
Categories: Astronomy, NASA

Space Station's EarthKAM Sees the Grand Canyon

Tue, 05/30/2017 - 11:57am
On April 3, 2017, the student-controlled EarthKAM camera aboard the International Space Station captured this photograph of a favorite target -- the Grand Canyon -- from low Earth orbit. The camera has been aboard the orbiting outpost since the first space station expedition began in November 2000 and supports approximately four missions annually.
Categories: Astronomy, NASA