galaxy evolution explorer galex

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Globular Cluster NGC 1851 in the Southern Constellation Columba

Globular Cluster NGC 1851 in the Southern Constellation Columba

This ultraviolet image from NASA Galaxy Evolution Explorer is of the globular cluster NGC 1851 in the southern constellation Columba. NASA/JPL-Caltech/SSC

Artist Concept of Galaxy Evolution Explorer

Artist Concept of Galaxy Evolution Explorer

The Galaxy Evolution Explorer was launched on April 28, 2003. Its mission is to study the shape, brightness, size and distance of galaxies across 10 billion years of cosmic history. The 50-centimeter-diameter (... More

New Galaxy Quest Readies for Launch

New Galaxy Quest Readies for Launch

In the Multi-Payload Processing Facility, workers check the deployment of the cover of the telescope on NASA Galaxy Evolution Explorer, an orbiting space telescope observing galaxies in ultraviolet light across... More

GALEX 1st Light Compilation, JPL/NASA images

GALEX 1st Light Compilation, JPL/NASA images

This compilation shows the constellation Hercules, as imaged on May 21 and 22, 2003, by NASA Galaxy Evolution Explorer. The images were captured by the two channels of the spacecraft camera during the mission f... More

GALEX 1st Light Near Ultraviolet -50

GALEX 1st Light Near Ultraviolet -50

This image was taken May 21 and 22, 2003, by NASA Galaxy Evolution Explorer. The image was made from data gathered by the two channels of the spacecraft camera during the mission first light milestone. NASA/JPL/Caltech

GALEX 1st Light Near Ultraviolet

GALEX 1st Light Near Ultraviolet

This image was taken on May 21 and 22, 2003, by NASA Galaxy Evolution Explorer. The image was made from data gathered during the missions first light milestone, and shows celestial objects in the constellation ... More

GALEX 1st Light Far Ultraviolet

GALEX 1st Light Far Ultraviolet

This image was taken May 21 and 22, 2003 by NASA Galaxy Evolution Explorer. The image was made from data gathered by the far ultraviolet channel of the spacecraft camera during the mission first light milestone... More

GALEX 1st Light Near and Far Ultraviolet -100

GALEX 1st Light Near and Far Ultraviolet -100

NASA's Galaxy Evolution Explorer took this image on May 21 and 22, 2003. The image was made from data gathered by the two channels of the spacecraft camera during the mission's "first light" milestone. It shows... More

Galaxy UGC10445, JPL/NASA images

Galaxy UGC10445, JPL/NASA images

This ultraviolet color image of the galaxy UGC10445 was taken by NASA Galaxy Evolution Explorer on June 7 and June 14, 2003. UGC10445 is a spiral galaxy located 40 million light-years from Earth. http://photoj... More

Galaxy Centaurus A, JPL/NASA images

Galaxy Centaurus A, JPL/NASA images

This image of the active galaxy Centaurus A was taken by NASA's Galaxy Evolution Explorer on June 7, 2003. The galaxy is located 30 million light-years from Earth and is seen edge on, with a prominent dust lane... More

Groth Deep Image, JPL/NASA images

Groth Deep Image, JPL/NASA images

This ultraviolet color blowup of the Groth Deep Image was taken by NASA Galaxy Evolution Explorer on June 22 and June 23, 2003. Many hundreds of galaxies are detected in this portion of the image. NASA astrono... More

Groth Deep Locations Image, JPL/NASA images

Groth Deep Locations Image, JPL/NASA images

NASA's Galaxy Evolution Explorer photographed this ultraviolet color blowup of the Groth Deep Image on June 22 and June 23, 2003. Hundreds of galaxies are detected in this portion of the image, and the faint re... More

Deep Imaging Survey, JPL/NASA images

Deep Imaging Survey, JPL/NASA images

This is the first Deep Imaging Survey image taken by NASA Galaxy Evolution Explorer. On June 22 and 23, 2003, the spacecraft obtained this near ultraviolet image of the Groth region by adding multiple orbits fo... More

Galaxy Messier 51, JPL/NASA images

Galaxy Messier 51, JPL/NASA images

NASA's Galaxy Evolution Explorer took this image of the spiral galaxy Messier 51 on June 19 and 20, 2003. Messier 51 is located 27 million light-years from Earth. Due to a lack of star formation, the companion ... More

Galaxy M101, JPL/NASA images. NASA public domain image colelction.

Galaxy M101, JPL/NASA images. NASA public domain image colelction.

This three-color image of galaxy M101 was taken by NASA's Galaxy Evolution Explorer on June 20, 2003. The far ultraviolet emissions are shown in blue, the near ultraviolet emissions are green, and the red emiss... More

Messier 101, JPL/NASA images. NASA public domain image colelction.

Messier 101, JPL/NASA images. NASA public domain image colelction.

NASA Galaxy Evolution Explorer took this near ultraviolet image of Messier 101 on June 20, 2003. Messier 101 is a large spiral galaxy located 20 million light-years from Earth. http://photojournal.jpl.nasa.gov... More

Messier 101 Single Orbit Exposure

Messier 101 Single Orbit Exposure

This single orbit exposure, ultraviolet color image of Messier 101 was taken by NASA's Galaxy Evolution Explorer on June 20, 2003. Messier 101 is a large spiral galaxy located 20 million light-years from Earth.... More

Galaxy NGC5398, JPL/NASA images

Galaxy NGC5398, JPL/NASA images

This is an ultraviolet color image of the galaxy NGC5398 taken by NASA Galaxy Evolution Explorer on June 7, 2003. NGC5398 is a barred spiral galaxy located 60 million light-years from Earth. The star formation ... More

Galaxy NGC5474, JPL/NASA images

Galaxy NGC5474, JPL/NASA images

NASA Galaxy Evolution Explorer took this ultraviolet color image of the galaxy NGC5474 on June 7, 2003. NGC5474 is located 20 million light-years from Earth and is within a group of galaxies dominated by the Me... More

Galaxy NGC5962, JPL/NASA images

Galaxy NGC5962, JPL/NASA images

NASA Galaxy Evolution Explorer took this ultraviolet color image of the galaxy NGC5962 on June 7, 2003. This spiral galaxy is located 90 million light-years from Earth. http://photojournal.jpl.nasa.gov/catalog... More

Galaxy Messier 83, JPL/NASA images

Galaxy Messier 83, JPL/NASA images

This image of the spiral galaxy Messier 83 was taken by NASA's Galaxy Evolution Explorer on June 7, 2003. Located 15 million light years from Earth and known as the Southern Pinwheel Galaxy, Messier 83 displays... More

Andromeda Galaxy, JPL/NASA images

Andromeda Galaxy, JPL/NASA images

This image is from NASA Galaxy Evolution Explorer is an observation of the large galaxy in Andromeda, Messier 31. The Andromeda galaxy is the most massive in the local group of galaxies that includes our Milky ... More

Galaxy NGC 247, JPL/NASA images

Galaxy NGC 247, JPL/NASA images

This image of the dwarf spiral galaxy NGC 247 was taken by Galaxy Evolution Explorer on October 13, 2003, in a single orbit exposure of 1600 seconds. The region that looks like a "hole" in the upper part of the... More

Galaxy NGC 55, JPL/NASA images. NASA public domain image colelction.

Galaxy NGC 55, JPL/NASA images. NASA public domain image colelction.

This image of the nearby edge-on spiral galaxy NGC 55 was taken by Galaxy Evolution Explorer on September 14, 2003, during 2 orbits. This galaxy lies 5.4 million light years from our Milky Way galaxy and is a m... More

Galaxy NGC 300, JPL/NASA images

Galaxy NGC 300, JPL/NASA images

This image of the nearby spiral galaxy NGC 300 was taken by Galaxy Evolution Explorer in a single orbit exposure of 27 minutes on October 10, 2003. NGC 300 lies 7 million light years from our Milky Way galaxy a... More

Stephan Quintet and NGC 7331. NASA public domain image colelction.

Stephan Quintet and NGC 7331. NASA public domain image colelction.

Galaxy Evolution Explorer observation of Stephan's Quintet and the nearby galaxy NGC 7331. Blue represents far ultraviolet, and red near ultraviolet. Stephan's quintet is an interacting group of galaxies. Close... More

Globular Cluster Messier 2 in Aquarius

Globular Cluster Messier 2 in Aquarius

This image of the Globular cluster Messier 2 (M2) was taken by Galaxy Evolution Explorer on August 20, 2003. This image is a small section of a single All Sky Imaging Survey exposure of only 129 seconds in the ... More

Happy Anniversary to a Galactic Explorer

Happy Anniversary to a Galactic Explorer

The Galaxy Evolution Explorer specializes in surveying galaxies in ultraviolet light. Its telescope, 50 centimeters (19.7 inches) in diameter, has a field of view that is much wider than most ground-based and s... More

Baby Galaxies in the Adult Universe

Baby Galaxies in the Adult Universe

This artist's conception illustrates the decline in our universe's "birth-rate" over time. When the universe was young, massive galaxies were forming regularly, like baby bees in a bustling hive. In time, the u... More

Nearby Newborns, JPL/NASA images

Nearby Newborns, JPL/NASA images

This image shows six of the three-dozen "ultraviolet luminous galaxies" spotted in our corner of the universe by NASA's Galaxy Evolution Explorer. These massive galaxies greatly resemble newborn galaxies that w... More

Fires of Galactic Youth Artist Animation

Fires of Galactic Youth Artist Animation

This artist's animation shows a typical young galaxy, teeming with hot, newborn stars and exploding supernovas. The supernovas are seen as white flashes of light. NASA's Galaxy Evolution Explorer spotted three... More

Classic Galaxy with Glamour, JPL/NASA images

Classic Galaxy with Glamour, JPL/NASA images

Young hot blue stars dominate the outer spiral arms of nearby galaxy NGC 300, while the older stars congregate in the nuclear regions which appear yellow-green in this image from NASA Galaxy Evolution Explorer.... More

A Barred Spiral  Galaxy, and the Small Elliptical Companion Galaxy NGC 1097A

A Barred Spiral Galaxy, and the Small Elliptical Companion Galaxy NGC...

This ultraviolet image from NASA Galaxy Evolution Explorer shows the interacting pair NGC 1097, a barred spiral galaxy, and the small elliptical companion galaxy NGC 1097A. NASA/JPL-Caltech/SSC

Barred Spiral Galaxy NGC 1365. NASA public domain image colelction.

Barred Spiral Galaxy NGC 1365. NASA public domain image colelction.

This ultraviolet image from NASA Galaxy Evolution Explorer shows barred spiral galaxy NGC 1365, which is a member of the Fornax Cluster of Galaxies. http://photojournal.jpl.nasa.gov/catalog/PIA07901 NASA/JPL-Caltech/SSC

Planetary Nebula NGC 7293 also Known as the Helix Nebula

Planetary Nebula NGC 7293 also Known as the Helix Nebula

This ultraviolet image from NASA Galaxy Evolution Explorer is of the planetary nebula NGC 7293 also known as the Helix Nebula. It is the nearest example of what happens to a star, like our own Sun, as it approa... More

Southern Pinwheel Galaxy M83, JPL/NASA images

Southern Pinwheel Galaxy M83, JPL/NASA images

Ultraviolet images such as this one from NASA's Galaxy Evolution Explorer suggest the M83 has unusual pockets of star formation separated by large distances from the spiral arms in the main disk of the galaxy. ... More

Large Face on Spiral Galaxy NGC 3344

Large Face on Spiral Galaxy NGC 3344

This ultraviolet image from NASA Galaxy Evolution Explorer is of the large face on spiral galaxy NGC 3344. The inner spiral arms are wrapped so tightly that they are difficult to distinguish. http://photojourn... More

Interacting Group of Galaxies Known as Stephan Quintet

Interacting Group of Galaxies Known as Stephan Quintet

This ultraviolet image from NASA Galaxy Evolution Explorer is of the interacting group of galaxies known as Stephan Quintet NGC 7317, NGC 7318A, NGC 7318B, NGC 7319, NGC 7320, lower left. Of the five galaxies i... More

Virgo Galaxy Cluster, JPL/NASA images

Virgo Galaxy Cluster, JPL/NASA images

This ultraviolet image from NASA Galaxy Evolution Explorer is of a small area of the Virgo Cluster of galaxies. http://photojournal.jpl.nasa.gov/catalog/PIA07906 NASA/JPL-Caltech/SSC

Diverse Group of Galaxy Types, NGC 3190 Field

Diverse Group of Galaxy Types, NGC 3190 Field

This ultraviolet image from NASA Galaxy Evolution Explorer is of a diverse group of galaxy types. NGC 3190 is a dusty edge on spiral galaxy. NGC 3187 is highly distorted. NASA/JPL-Caltech/SSC

Face on Barred and Ringed Spiral Galaxy NGC 3351

Face on Barred and Ringed Spiral Galaxy NGC 3351

This ultraviolet image from NASA Galaxy Evolution Explorer left and visual image right of the face on barred and ringed spiral galaxy NGC 3351 M95. NASA/JPL-Caltech/SSC

Barred Ring Galaxy NGC 1291. NASA public domain image colelction.

Barred Ring Galaxy NGC 1291. NASA public domain image colelction.

This ultraviolet image left and visual image right from NASA Galaxy Evolution Explorer is of the barred ring galaxy NGC 1291. The VIS image is dominated by the inner disk and bar. The UV image is dominated by t... More

Irregular Dwarf Galaxy IC 1613. NASA public domain image colelction.

Irregular Dwarf Galaxy IC 1613. NASA public domain image colelction.

This ultraviolet image left and visual image right from NASA Galaxy Evolution Explorer is of the irregular dwarf galaxy IC 1613. NASA/JPL-Caltech/SSC

NGC 5128 Centaurus-A, JPL/NASA images

NGC 5128 Centaurus-A, JPL/NASA images

This ultraviolet image from NASA Galaxy Evolution Explorer is of NGC 5128 Centaurus-A. This unusual galaxy is believed to be the result of a collision of two normal galaxies. NASA/JPL-Caltech/SSC

Dwarf Star Erupts in Giant Flare

Dwarf Star Erupts in Giant Flare

This image taken by NASAS Galaxy Evolution Explorer shows one of the largest flares, or star eruptions, ever recorded at ultraviolet wavelengths. This star is called GJ 3685A. NASA/JPL-Caltech

It Not a Bird or a Plane. NASA public domain image colelction.

It Not a Bird or a Plane. NASA public domain image colelction.

Since its launch in 2003, NASA Galaxy Evolution Explorer the space telescope originally designed to observe galaxies across the universe in ultraviolet light has discovered a festive sky blinking with flaring a... More

Surprise Ultraviolet Party in the Sky

Surprise Ultraviolet Party in the Sky

A group of six streaking objects, the identities of which remain unknown, can be seen here flying across the telescope sight in this image from NASA Galaxy Evolution Explorer. NASA/JPL-Caltech

Hello to Arms, JPL/NASA images. NASA public domain image colelction.

Hello to Arms, JPL/NASA images. NASA public domain image colelction.

This image highlights the hidden spiral arms blue that were discovered around the nearby galaxy NGC 4625 by the ultraviolet eyes of NASA Galaxy Evolution Explorer. NASA/JPL-Caltech/Carnegie Observatories/DSS

Galactic Halos of Hydrogen, JPL/NASA images

Galactic Halos of Hydrogen, JPL/NASA images

This image shows two companion galaxies, NGC 4625 top and NGC 4618 bottom, and their surrounding cocoons of cool hydrogen gas purple. The huge set of spiral arms on NGC 4625 blue was discovered by the ultraviol... More

Look at my Arms!, JPL/NASA images

Look at my Arms!, JPL/NASA images

This image shows the hidden spiral arms that were discovered around the galaxy called NGC 4625 top by the ultraviolet eyes of NASA Galaxy Evolution Explorer. An armless companion galaxy called NGC 4618 is pictu... More

Anatomy of a Triangulum, JPL/NASA images

Anatomy of a Triangulum, JPL/NASA images

This image from NASA Galaxy Evolution Explorer shows M33, the Triangulum Galaxy, is a perennial favorite of amateur and professional astronomers alike, due to its orientation and relative proximity to us. NASA/... More

GALEX Distributes Local Galactic Treasures at AAS

GALEX Distributes Local Galactic Treasures at AAS

From sparkling blue rings to dazzling golden disks and mined from NASA Galaxy Evolution Explorer Survey of Nearby Galaxies data, these cosmic gems were collected with the telescope sensitive ultraviolet instrum... More

Triple Scoop from Galaxy Hunter

Triple Scoop from Galaxy Hunter

Located 10 million light-years away in the southern constellation Sculptor, the Silver Dollar galaxy, or NGC 253, is one of the brightest spiral galaxies in the night sky as seen in this edge-on view from NASA ... More

An Unwelcome Place for New Stars artist concept

An Unwelcome Place for New Stars artist concept

This artist concept depicts a supermassive black hole at the center of a galaxy. NASA Galaxy Evolution Explorer found evidence that black holes once they grow to a critical size stifle the formation of new star... More

Big Black Holes Mean Bad News for Stars diagram

Big Black Holes Mean Bad News for Stars diagram

This diagram illustrates research from NASA Galaxy Evolution Explorer showing that black holes once they reach a critical size can put the brakes on new star formation in elliptical galaxies. NASA/JPL-Caltech/Y... More

Black Hole Grabs Starry Snack  Artist Concept

Black Hole Grabs Starry Snack Artist Concept

This artist concept shows a supermassive black hole at the center of a remote galaxy digesting the remnants of a star. NASA/JPL-Caltech

Ghostly Remnant of an Explosive Past

Ghostly Remnant of an Explosive Past

This enhanced image from the far-ultraviolet detector on NASA Galaxy Evolution shows a ghostly shell of ionized gas around Z Camelopardalis, a binary, or double-star system featuring a collapsed, dead star know... More

Scene of Multiple Explosions, JPL/NASA images

Scene of Multiple Explosions, JPL/NASA images

This composite image NASA Galaxy Evolution Explorer shows Z Camelopardalis, or Z Cam, a double-star system featuring a collapsed, dead star, called a white dwarf, and a companion star, as well as a ghostly shel... More

Explosions - Large and Small  Artist Concept

Explosions - Large and Small Artist Concept

This artist concept is of Z Camelopardalis Z Cam, a stellar system featuring a collapsed, dead star, or white dwarf, and a companion star. This image shows one of the first regions of Mars measured after CRISM ... More

Galaxy Mission Completes Four Star-Studded Years in Space

Galaxy Mission Completes Four Star-Studded Years in Space

NASA Galaxy Evolution Explorer is celebrates its fourth year in space with some of M81 hottest stars. In this ultraviolet image, the magnificent M81 spiral galaxy is shown at the center. NASA/JPL-Caltech/Harvar... More

Galaxy Evolution Explorer Spies Band of Stars

Galaxy Evolution Explorer Spies Band of Stars

Globular star cluster NGC 362, in a false-color image from NASA's Galaxy Evolution Explorer. Image credit: NASA/JPL-Caltech/Univ. of Virginia The Galaxy Evolution Explorer's ultraviolet eyes have captured a g... More

Mira Soars Through the Sky. NASA public domain image colelction.

Mira Soars Through the Sky. NASA public domain image colelction.

New ultraviolet images from NASA Galaxy Evolution Explorer shows a speeding star that is leaving an enormous trail of eeds for new solar systems. The star, named Mira pronounced my-rah after the latin word for ... More

Anatomy of a Shooting Star. NASA public domain image colelction.

Anatomy of a Shooting Star. NASA public domain image colelction.

A close-up view of a star racing through space faster than a speeding bullet can be seen in this image from NASA Galaxy Evolution Explorer. The star is called Mira pronounced My-rah. NASA/JPL-Caltech

A Real Shooting Star Artist Concept

A Real Shooting Star Artist Concept

This artist concept illustrates a star flying through our galaxy at supersonic speeds, leaving a 13-light-year-long trail of glowing material in its wake. The star, named Mira pronounced my-rah after the latin ... More

Mira Tail There All Along. NASA public domain image colelction.

Mira Tail There All Along. NASA public domain image colelction.

NASA Galaxy Evolution Explorer discovered an exceptionally long comet-like tail of material trailing behind Mira -- a star that has been studied thoroughly for about 400 years. NASA/JPL-Caltech/POSS-II/DSS

Portrait of a Galaxy Life. NASA public domain image colelction.

Portrait of a Galaxy Life. NASA public domain image colelction.

Evidence from NASA Galaxy Evolution Explorer supports the long-held notion that many galaxies begin life as smaller spirals before transforming into larger, elliptical-shaped galaxies. NASA/JPL-Caltech/CTIO/Las... More

NGC 300, JPL/NASA images. NASA public domain image colelction.

NGC 300, JPL/NASA images. NASA public domain image colelction.

This image from NASA Galaxy Evolution Explorer shows the galaxy NGC 300, located about seven million light-years away in the constellation Sculptor. It is a classic spiral galaxy with open arms and vigorous sta... More

NGC 1291, JPL/NASA images. NASA public domain image colelction.

NGC 1291, JPL/NASA images. NASA public domain image colelction.

This image from NASA Galaxy Evolution Explorer shows the galaxy NGC 1291, located about 33 million light-years away in the constellation Eridanus. NGC 1291 is notable for its unusual inner bar and outer ring st... More

NGC 4569, JPL/NASA images. NASA public domain image colelction.

NGC 4569, JPL/NASA images. NASA public domain image colelction.

This image from NASA Galaxy Evolution Explorer shows the galaxy NGC 4569 in the constellation Virgo. It is one of the largest and brightest spiral galaxies found in the Virgo cluster of galaxies, the nearest ma... More

NGC 1316, JPL/NASA images. NASA public domain image colelction.

NGC 1316, JPL/NASA images. NASA public domain image colelction.

This image from NASA Galaxy Evolution Explorer shows the galaxy NGC 1316, located about 62 million light-years away in the constellation Fornax. The elliptical-shaped galaxy may be in the late stages of merging... More

Beyond the Borders of a Galaxy. NASA public domain image colelction.

Beyond the Borders of a Galaxy. NASA public domain image colelction.

The outlying regions around the Southern Pinwheel galaxy, or M83, are highlighted in this composite image from NASA Galaxy Evolution Explorer and the National Science Foundation Very Large Array in New Mexico. ... More

Ultraviolet Extensions, JPL/NASA images

Ultraviolet Extensions, JPL/NASA images

This ultraviolet image from NASA Galaxy Evolution Explorer shows the Southern Pinwheel galaxy, also know as Messier 83 or M83. It is located 15 million light-years away in the southern constellation Hydra. NASA... More

Galaxy Evolution Explorer Celebrates Five Years in Space

Galaxy Evolution Explorer Celebrates Five Years in Space

Since its launch five years ago, the Galaxy Evolution Explorer has photographed hundreds of millions of galaxies in ultraviolet light. M106 is one of those galaxies, 22 light years away, it strikes a pose in bl... More

Ghost of Mirach Rears its Spooky Head

Ghost of Mirach Rears its Spooky Head

The Ghost of Mirach galaxy is shown in visible light on the left, and in ultraviolet as seen by NASA Galaxy Evolution Explorer on the right. The fields of view are identical in both pictures, with the Ghost of ... More

Seeing Baby Dwarf Galaxies, JPL/NASA images

Seeing Baby Dwarf Galaxies, JPL/NASA images

The unique ultraviolet vision of NASA Galaxy Evolution Explorer revealed, for the first time, dwarf galaxies forming out of nothing more than pristine gas likely leftover from the early universe. NASA/JPL-Caltech/DSS

The Extended Region Around the Planetary Nebula NGC 3242

The Extended Region Around the Planetary Nebula NGC 3242

This ultraviolet image from NASA Galaxy Evolution Explorer shows NGC 3242, a planetary nebula frequently referred to as Jupiter Ghost. The small circular white and blue area at the center of the image is the we... More

Adding up Stars in a Galaxy. NASA public domain image colelction.

Adding up Stars in a Galaxy. NASA public domain image colelction.

NASA Galaxy Evolution Explorer spacecraft and Cerro Tololo Inter-American Observatory combined data making this diagram illustratrating the extent to which astronomers have been underestimating the proportion o... More

A Lesson in Counting Stars. NASA public domain image colelction.

A Lesson in Counting Stars. NASA public domain image colelction.

These two photographs were made by combining data from NASA Galaxy Evolution Explorer spacecraft and the Cerro Tololo Inter-American Observatory in Chile to learn that not all galaxies make stars of different s... More

Now You See a Tail, Now You Dont

Now You See a Tail, Now You Dont

NASA Galaxy Evolution Explorer found a tail behind a galaxy called IC 3418. This star-studded tail was created as the galaxy plunged into gas in a family of galaxies known as the Virgo cluster. NASA/JPL-Caltech

Planets Under a Red Sun Artist Concept

Planets Under a Red Sun Artist Concept

This artist concept illustrates a young, red dwarf star surrounded by three planets. NASA Galaxy Evolution Explorer is helping to identify young, red dwarf stars that are close to us by detecting their ultravio... More

Dark Energy and Gravity: Yin and Yang of the Universe Artist Concept

Dark Energy and Gravity: Yin and Yang of the Universe Artist Concept

New results from NASA Galaxy Evolution Explorer and the Anglo-Australian Telescope atop Siding Spring Mountain in Australia confirm that dark energy is a smooth, uniform force that now dominates over the effect... More

How to Measure the Universe. NASA public domain image colelction.

How to Measure the Universe. NASA public domain image colelction.

This diagram based on results from NASA Galaxy Evolution Explorer and the Anglo-Australian Telescope illustrates two ways to measure how fast the universe is expanding. NASA/JPL-Caltech

Black Hole Swallows a Star. NASA public domain image colelction.

Black Hole Swallows a Star. NASA public domain image colelction.

These images, taken with NASA Galaxy Evolution Explorer and the Pan-STARRS1 telescope in Hawaii, show a brightening inside a galaxy caused by a flare from its nucleus. The arrow in each image points to the gala... More

Andromeda, JPL/NASA images. NASA public domain image colelction.

Andromeda, JPL/NASA images. NASA public domain image colelction.

Hot stars burn brightly in this new image from NASA Galaxy Evolution Explorer, showing the ultraviolet side of a familiar face. Approximately 2.5 million light-years away, the Andromeda galaxy, or M31, is our M... More

Simulation of Galactic Collision Simulation

Simulation of Galactic Collision Simulation

Computer simulations of the collision between NGC 6872 and IC 4970 reproduce the basic features of the galaxies as we see them today. NASA Goddard Space Flight Center, after C. Horellou Onsala Space Observatory... More

Ultraviolet Ring of Stars, JPL/NASA images

Ultraviolet Ring of Stars, JPL/NASA images

This image from NASA Galaxy Evolution Explorer GALEX shows Messier 94, also known as NGC 4736, in ultraviolet light. It is located 17 million light-years away in the constellation Canes Venatici. NASA/JPL-Caltech

Galaxy Pencil-Thin Profile, JPL/NASA images

Galaxy Pencil-Thin Profile, JPL/NASA images

This image from NASA Galaxy Evolution Explorer shows NGC 4565, one of the nearest and brightest galaxies not included in the famous list by 18th-century comet hunter Charles Messier. NASA/JPL-Caltech

Big Brother to the Milky Way. NASA public domain image colelction.

Big Brother to the Milky Way. NASA public domain image colelction.

This image from NASA Galaxy Evolution Explorer shows NGC 6744, one of the galaxies most similar to our Milky Way in the local universe. NASA/JPL-Caltech

After the Explosion: Investigating Supernova Sites

After the Explosion: Investigating Supernova Sites

A new study analyzes several sites where dead stars once exploded. The explosions, called Type Ia supernovae, occurred within galaxies, six of which are shown in these images from the Sloan Digital Sky Survey. SDSS

Frankenstein Galaxy, JPL/NASA images

Frankenstein Galaxy, JPL/NASA images

The galaxy UGC 1382 has been revealed to be far larger and stranger than previously thought. Astronomers relied on a combination of ground-based and space telescopes to uncover the true nature of this "Frankens... More