December 3, 2015. Three of Saturn's moons, Tethys, Enceladus, and Mimas, are captured in this group photo from NASA's Cassini spacecraft. Tethys (660 miles or 1062 kilometers across) appears… Read More

The BFR, which is variously said to stand for either Big Falcon Rocket or Big F@#$%^& Rocket, announced in September 2017, is SpaceX's privately-funded launch vehicle, spacecraft and spa… Read More

November 23, 2015. Saturn's moon Tethys appears to float between two sets of rings in this view from NASA's Cassini spacecraft, but it's just a trick of geometry. The rings, which are seen n… Read More

The video shows the motions of two million stars about 1.1–1.5 million years in the future. It displays a map of the full sky as seen from the Sun. The star initially circled is Gliese… Read More

October 27, 2015. Janus and Tethys demonstrate the main difference between small moons and large ones. It's all about the moon's shape. Moons like Tethys (660 miles or 1,062 kilometers acros… Read More

On Aug. 30, engineers at our Stennis Space Center wrapped up a summer of hot fire testing for flight controllers on RS-25 engines that will help power the new Space Launch System rocket bein… Read More

September 24, 2015. What looks like a pair of Saturnian satellites is actually a trio upon close inspection. Here, Cassini has captured Enceladus (313 miles or 504 kilometers across) above t… Read More

Rosetta was a space probe built by the European Space Agency launched on 2 March 2004. Along with Philae, its lander module, Rosetta performed a detailed study of comet 67P/Churyumov–G… Read More

July 29, 2015. Although Enceladus and Saturn's rings are largely made up of water ice, they show very different characteristics. The small ring particles are too tiny to retain internal heat… Read More

On 20 August 2017, 919 photos were taken by ESA astronaut Paolo Nespoli to create this timelapse of the Aurora Australis at 25 frames per second. Please visit OrbitalHub to read more Read More

April 11, 2015. This enhanced-color mosaic of Saturn's icy moon Tethys shows a range of features on the moon's trailing hemisphere. Tethys is tidally locked to Saturn, so the trailing hemisp… Read More

On 15 September 2017, 711 photos were taken by ESA astronaut Paolo Nespoli to create this time-lapse of a stunning aurora. Please visit OrbitalHub to read more Read More

April 11, 2015. Unusual arc-shaped, reddish streaks cut across the surface of Saturn's ice-rich moon Tethys in this enhanced-color mosaic. The red streaks are narrow, curved lines on the moo… Read More

This animation of NOAA's GOES East satellite imagery from Sept. 21 at 7:45 a.m. EDT (1145 UTC) to Sept. 23 ending at 7:45 a.m. EDT (1145 UTC) shows Jose becoming a post-tropical storm windin… Read More

March 27, 2015. Cassini stared toward Saturn's two-toned moon Iapetus (914 miles or 1,471 kilometers across) for about a week in early 2015, in a campaign motivated in part to investigate su… Read More

OSIRIS-REx is NASA's mission to explore near-earth asteroid Bennu, collect a sample, and return it to Earth. To get to Bennu, however, OSIRIS-REx must first leave the plane of Earth's orbit… Read More

February 10, 2015. Surface features on Rhea - mostly impact craters in this image - are thrown into sharp relief thanks to long shadows. Viewing this terrain near the day/night terminator ma… Read More

The Sun unleashed powerful solar flares on September 6, one of which was the strongest in over a decade. An X2.2-class flare was launched at 09:10 GMT and an X9.3 flare was observed at 12:02… Read More

February 4, 2015. Although Janus should be the least lonely of all moons - sharing its orbit with Epimetheus - it still spends most of its orbit far from other moons, alone in the vastness o… Read More

Voyager 2 is a space probe launched by NASA on August 20, 1977, to study the outer planets. Part of the Voyager program, it was launched 16 days before its twin, Voyager 1, on a trajectory t… Read More

August 12, 2014. Although solid-looking in many images, Saturn's rings are actually translucent. In this picture, we can glimpse the shadow of the rings on the planet through (and below) the… Read More

Voyager 1 is a space probe launched by NASA on September 5, 1977. Part of the Voyager program to study the outer Solar System, Voyager 1 launched 16 days after its twin, Voyager 2. Having op… Read More

January 23, 2014. The Cassini spacecraft captures a glimpse of the moon Atlas shortly after emerging from Saturn's shadow. Although the sunlight at Saturn's distance is feeble compared to th… Read More

Epic blooper reel from SpaceX... building and flying rockets requires a good sense of humor. Please visit OrbitalHub to read more Read More

October 10, 2013. This portrait looking down on Saturn and its rings was created from images obtained by NASA's Cassini spacecraft. It was made by amateur image processor and Cassini fan Gor… Read More

At the end of its mission, the Cassini spacecraft executed the "Grand Finale" of its mission: a number of risky passes through the gaps between Saturn and Saturn's inner rings. The purpose o… Read More

August 24, 2013. Saturn's moon Prometheus orbits near some of its handiwork in the F ring. Prometheus (53 miles, or 86 kilometers across) and its partner Pandora gravitationally sculpt and m… Read More

The Cassini–Huygens (commonly called Cassini) mission was a collaboration between NASA, the European Space Agency (ESA), and the Italian Space Agency (ASI) to send a probe to study the… Read More

June 20, 2013. A beautiful 'mini-jet' appears in the dynamic F ring of Saturn. Saturn's A ring (including the Keeler gap and just a hint of the Encke gap at the upper-right) also appears. Th… Read More

The SpaceX/Dragon cargo craft departed the International Space Station September 17, one month after delivering more than three tons of supplies and scientific experiments for the station&rs&hell…Read More

After launching in their Soyuz MS-06 spacecraft from the Baikonur Cosmodrome in Kazakhstan, Expedition 53-54 Soyuz Commander Alexander Misurkin of Roscosmos and flight engineers Mark Vande H… Read More

NASA’s Cassini spacecraft has explored the Saturn system since 2004, re-writing our understanding of the giant planet, its rings, moons and magnetosphere. For 13 years the spacecraft&r&hell…Read More

June 15, 2013. Tethys, like many moons in the solar system, keeps one face pointed towards the planet around which it orbits. Tethys' anti-Saturn face is seen here, fully illuminated, baskin… Read More

May 20, 2013. A thin sliver of Mimas is illuminated, the long shadows showing off its many craters, indicators of the moon's violent history. The most famous evidence of a collision on Mimas… Read More

NASA's Near-Earth Object Wide-field Infrared Survey Explorer (NEOWISE) mission has released its third year of survey data, with the spacecraft discovering 97 previously unknown celestial obj… Read More

May 16, 2013. The craters of Tethys tell the story of a violent history marked by impacts. The names of the craters also tell oft-violent stories: in this case, the Iliad and the Odyssey. He… Read More

Scientists using data from NASA’s Lunar Reconnaissance Orbiter, or LRO, have identified bright areas in craters near the moon’s south pole that are cold enough to have frost pres… Read More

March 9, 2013. On its fourth and final targeted flyby of Rhea, the Cassini spacecraft provided this stunning view of the ancient and heavily cratered surface. Billions of years of impacts ha… Read More

Our Cold War history is now offering scientists a chance to better understand the complex space system that surrounds us. Space weather -- which can include changes in Earth's magnetic envir… Read More

This image was taken on March 09, 2013, and received on Earth March 10, 2013, by NASA's Cassini spacecraft. The camera was pointing toward Rhea at approximately 39,072 miles (62,880 kilomete… Read More

No planet is better studied than the one we actually live on. NASA's fleet of Earth observing spacecraft, supported by aircraft, ships and ground observations, measure aspects of the environ… Read More

December 23, 2012. The famed wispy terrain on Saturn's moon Dione is front and center in this recent Cassini spacecraft image. The ''wisps'' are fresh fractures on the trailing hemisphere of… Read More

NASA’s CubeSat Launch Initiative provides opportunities for small satellite payloads built by universities, high schools and non-profit organizations to fly on upcoming launches. Throu… Read More

April 20, 2012. Tethys appears to be peeking out from behind Rhea, watching the watcher. Scientists believe that Tethys' surprisingly high albedo is due to the water ice jets emerging from i… Read More

Astrobotic’s Peregrine Lunar Lander will launch onboard a ULA launch vehicle in 2019, during the 50th anniversary of Apollo 11. This effort is a big step in realizing Astrobotic’… Read More

March 28, 2012. This raw image from NASA's Cassini spacecraft was taken with the camera pointing toward Saturn's moon Dione at approximately 27,668 miles (44,528 kilometers) away. Please vi… Read More

Saturn’s giant, hazy moon Titan has been essential to NASA’s Cassini mission during its 13 thrilling years of exploration there. Cassini and the European Huygens probe have revea… Read More

January 30, 2012. The Cassini spacecraft looks toward the dark side of Saturn's largest moon and captures the halo-like ring produced by sunlight scattering through the periphery of Titan's… Read More

TDRS-M, to be renamed TDRS-13 upon entry into service, is an American communications satellite operated by NASA as part of the Tracking and Data Relay Satellite System. The thirteenth Tracki… Read More

December 7, 2011. Compared to the gas giant, the two moons shown on either side of Saturn seem particularly small in this Cassini spacecraft view. Tethys (660 miles, or 1,062 kilometers acro… Read More

As the US enjoyed a total solar eclipse on 21 August 2017, ESA’s Sun-watching Proba-2 satellite captured three partial eclipses from its viewpoint, 800 km above Earth. Proba-2 orbits E… Read More

November 4, 2011. Saturn's rings lie between a pair of moons in this Cassini spacecraft view that features Mimas and Prometheus. Mimas (246 miles or 396 kilometers across) is the more notice… Read More

From a million miles out in space, NASA’s Earth Polychromatic Imaging Camera (EPIC) captured 12 natural color images of the moon’s shadow crossing over North America on August 21… Read More

October 19, 2011. This raw, unprocessed image of Saturn's moon Enceladus was taken as the spacecraft passed Enceladus, and its infrared instruments, cameras and other instruments monitored a… Read More

While many in the U.S. experienced a total solar eclipse on August 21, 2017, SDO's perspective, observing the Sun from Earth orbit, afforded it a view of a partial eclipse. This movie, creat… Read More

October 1, 2011. Saturn's moon Enceladus is partially eclipsed by the planet in this Cassini spacecraft view which also features the moon Titan in the distance. Cassini flew by Enceladus, sh… Read More

Cassini gazed toward high southern latitudes near Saturn's south pole to observe ghostly curtains of dancing light -- Saturn's southern auroras, or southern lights. These natural light displ… Read More

June 18, 2011. NASA's Cassini spacecraft obtained this unprocessed image of Saturn's moon Helene. Please visit OrbitalHub to read more Read More

On Friday, August 18, NASA launched the third in a series of three advanced, Tracking and Data Relay Satellites, known as TDRS-M, from Cape Canaveral Air Force Station, in Florida. This late… Read More

January 11, 2011. Saturn's northern storm marches through the planet's atmosphere in the top right of this false-color mosaic from NASA's Cassini spacecraft. Saturn's atmosphere and its ring… Read More

An active region on the sun — an area of intense and complex magnetic fields — has rotated into view on the sun and seems to be growing rather quickly in this video captured by N… Read More

November 30, 2010. This Cassini narrow-angle camera image -- one of those acquired in the survey conducted by the Cassini imaging science team of the geyser basin at the south pole of Encela… Read More

A SpaceX Falcon 9 rocket launched from NASA’s Kennedy Space Center in Florida Aug. 14, sending an unpiloted Dragon cargo spacecraft on a delivery run to the International Space Station… Read More

November 28, 2010. NASA's Cassini spacecraft obtained this raw image of the Saturnian moon Hyperion when the spacecraft was about 73,000 kilometers (45,000 miles) away from the moon's surfac… Read More

A solar flare is a sudden flash of brightness observed near the Sun's surface. It involves a very broad spectrum of emissions, an energy release of typically 1 × 1020 joules of energy… Read More

October 16, 2010. NASA’s Cassini spacecraft obtained this raw image of the moon Mimas just before Mimas went into shadow behind Saturn. The camera was approximately 101,552 kilometers… Read More

The 8.5-minute test conducted at NASA’s Stennis Space Center is part of a series of tests designed to put the upgraded former space shuttle engines through the rigorous temperature and… Read More

A neutron star is the collapsed core of a large (10–29 solar masses) star. Neutron stars are the smallest and densest stars known to exist. Though neutron stars typically have a radius… Read More

August 13, 2010. Small water ice particles fly from fissures in the south polar region of Saturn's moon Enceladus in this image taken during the flyby of the moon by NASA's Cassini spacecraf… Read More

Bricks have been 3D printed out of simulated moondust using concentrated sunlight. This ESA project took place at the DLR German Aerospace Center facility in Cologne, with a 3D printer table… Read More

Gale is a crater, and probable dry lake, on Mars near the northwestern part of the Aeolis quadrangle at 5.4°S 137.8°E. It is 154 km (96 mi) in diameter and estimated to be about 3.5… Read More

August 13, 2010. This dramatic view looks across the region of Enceladus' geyser basin and down on the ends of the Baghdad and Damascus fractures that face Saturn. The image, which looks app… Read More

Sunspots are temporary phenomena on the Sun's photosphere that appear as spots darker than the surrounding areas. They are regions of reduced surface temperature caused by concentrations of… Read More

Curiosity comprised 23 percent of the mass of the 3,893 kg (8,583 lb) Mars Science Laboratory (MSL) spacecraft, which had the sole mission of delivering the rover safely across space from Ea… Read More

August 13, 2010. Jets of water ice particles spew from Saturn's moon Enceladus in this image obtained by NASA's Cassini spacecraft. A crescent of the moon appears dimly illuminated in front… Read More

After launching earlier in the day in their Soyuz MS-05 spacecraft from the Baikonur Cosmodrome in Kazakhstan, Expedition 52-53 Soyuz Commander Sergey Ryazanskiy of Roscosmos and Flight Engi… Read More

The Landsat program is the longest-running enterprise for acquisition of satellite imagery of Earth. On July 23, 1972 the Earth Resources Technology Satellite was launched. This was eventual… Read More

August 19, 2008. A propeller-shaped structure created by an unseen moon appears dark in this image obtained by NASA’s Cassini spacecraft of the unilluminated side of Saturn's rings. Th… Read More

If the Moon were in a perfectly circular orbit, a little closer to the Earth, and in the same orbital plane, there would be total solar eclipses every month. However, the Moon's orbit is inc… Read More

As seen from the Earth, a solar eclipse is a type of eclipse that occurs when the Moon passes between the Sun and Earth, and the Moon fully or partially blocks ("occults") the Sun. This can… Read More

December 3, 2007. The Cassini spacecraft's close flyby of Epimetheus in December 2007 returned detailed images of the moon's south polar region. The view shows what might be the remains of a… Read More

BepiColombo is Europe's first mission to Mercury. It will set off in 2018 on a journey to the smallest and least explored terrestrial planet in our Solar System. When it arrives at Mercury i… Read More

April 7, 2010. Swinging by Saturn's small moon Epimetheus, Cassini snapped this shot during the spacecraft's flyby. Lit terrain seen here is on the Saturn-facing side of Epimetheus (113 kilo… Read More

On July 4, 1997, NASA's Mars Pathfinder lander and Sojourner rover successfully landed on the Red Planet utilizing a revolutionary airbag landing system. This special 20th anniversary show c… Read More

March 24, 2010. Saturn's moon Rhea looms "over" a smaller and more distant Epimetheus against a striking background of planet and rings. The two moons aren't actually close to each other. Th… Read More

LISA Pathfinder, a mission led by the European Space Agency (ESA) with contributions from NASA, has successfully demonstrated critical technologies needed to build a space-based observatory… Read More

The unpiloted SpaceX/Dragon cargo craft departed the International Space Station July 2 bound for a parachute-assisted splashdown in the Pacific Ocean southwest of Long Beach, California. Lo… Read More

March 4, 2010. Saturn's moon Dione dwarfs the moon Telesto in this Cassini spacecraft image. Dione (1123 kilometers, 698 miles across) is the fourth largest of Saturn's moons, and it dominat… Read More

Parker Solar Probe is a planned NASA robotic spacecraft to probe the outer corona of the Sun. It will approach to within 8.5 solar radii (5.9 million kilometers or 3.67 million miles) to the… Read More

March 3, 2010. The Cassini spacecraft snapped this image during the spacecraft's closest flyby of Saturn's moon Helene (33 kilometers, or 21 miles across). The small moon leads the much larg… Read More

Video, based on measurements by ESA’s Gaia and Hipparcos satellites, shows how our view of the Orion constellation will evolve over the next 450 000 years. Stars are not motionless in… Read More

No one under 20 has experienced a day without NASA at Mars. The Pathfinder mission, carrying the Sojourner rover, landed on Mars on July 4, 1997. In the 20 years since Pathfinder's touchdown… Read More

March 3, 2010. Although traveling at great speed, the Cassini spacecraft managed to capture this close view of Saturn's small moon Helene during a flyby. Saturn's atmosphere makes up the bac… Read More

The Larsen Ice Shelf is a long, fringing ice shelf in the northwest part of the Weddell Sea, extending along the east coast of the Antarctic Peninsula from Cape Longing to the area just sout… Read More

Earth Observing-1 (EO-1) is a NASA Earth observation satellite created to develop and validate a number of instrument and spacecraft bus breakthrough technologies. These will enable the deve… Read More

November 21, 2009. Dramatic plumes, both large and small, spray water ice and vapor from many locations along the famed "tiger stripes" near the south pole of Saturn's moon Enceladus. The ti… Read More

Reiner Gamma (γ) is a geographical feature of the Moon known as a lunar swirl. It is one of the most visible lunar swirls from Earth, visible from most telescopes. It was originally th… Read More

The unpiloted Russian ISS Progress 67 cargo ship automatically docked to the rear port of the station’s Zvezda Service Module on June 16, completing a two-day journey following its lau… Read More

October 19, 2009. The Cassini spacecraft captures a couple of small moons in this image taken while the spacecraft was nearly in the plane of Saturn's rings. Near the top of this image, a cr… Read More

The unpiloted Russian ISS Progress 67 cargo ship launched atop a Soyuz booster June 14 from the Baikonur Cosmodrome in Kazakhstan on a two-day journey to the International Space Station. The… Read More