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This still image from an animation from NASA GSFC's Solar Dynamics Observatory shows dark strands of plasma hovering above the Sun's surface beginning to interact with each other in a form of tug of war over two and a half days (June 28-30, 2015).
This still image from an animation from NASA GSFC's Solar Dynamics Observatory shows dark strands of plasma hovering above the Sun's surface beginning to interact with each other in a form of tug of war over two and a half days (June 28-30, 2015).

Plasma Push and Pull

NASA's New Millennium Deep Space 1 spacecraft approaching the comet 19P/Borrelly.
NASA's New Millennium Deep Space 1 spacecraft approaching the comet 19P/Borrelly.

Deep Space 1 Using its Ion Engine (Artist's Concept)

Flaring, active regions of our sun are highlighted in this image combining observations from several telescopes. During the observations, microflares went off, which are smaller versions of the larger flares that also erupt from the sun's surface.
Flaring, active regions of our sun are highlighted in this image combining observations from several telescopes. During the observations, microflares went off, which are smaller versions of the larger flares that also erupt from the sun's surface.

NuSTAR Stares at the Sun

This still image from an animation from NASA GSFC's Solar Dynamics Observatory shows magnetically charged particles forming a nicely symmetrical arch at the edge of the Sun as they followed the magnetic field lines of an active region (Aug.4-5, 2015).
This still image from an animation from NASA GSFC's Solar Dynamics Observatory shows magnetically charged particles forming a nicely symmetrical arch at the edge of the Sun as they followed the magnetic field lines of an active region (Aug.4-5, 2015).

A Golden Arch

The structure of the Sun's corona shows well in this image from NASA's Solar TErrestrial RElations Observatory (STEREO).
The structure of the Sun's corona shows well in this image from NASA's Solar TErrestrial RElations Observatory (STEREO).

Full Disk Image of the Sun, March 26, 2007

X-rays stream off the sun in this first picture of the sun, overlaid on a picture taken by NASA's Solar Dynamics Observatory, taken by NuSTAR.
X-rays stream off the sun in this first picture of the sun, overlaid on a picture taken by NASA's Solar Dynamics Observatory, taken by NuSTAR.

Sun Shines in High-Energy X-rays

This side-by-side rendering of the Sun at the same time in two different wavelengths of extreme ultraviolet light helps to visualize the differing features visible in each wavelength (Dec. 10-11, 2015). This image is from NASA's Solar Dynamics Observatory
This side-by-side rendering of the Sun at the same time in two different wavelengths of extreme ultraviolet light helps to visualize the differing features visible in each wavelength (Dec. 10-11, 2015). This image is from NASA's Solar Dynamics Observatory

Comparing Wavelengths

A pair of substantial coronal holes were the most notable features on the Sun over the week of Mar. 28 - Apr. 2, 2015. The images were taken in a wavelength of extreme ultraviolet light by NASA GSFC's Solar Dynamics Observatory.
A pair of substantial coronal holes were the most notable features on the Sun over the week of Mar. 28 - Apr. 2, 2015. The images were taken in a wavelength of extreme ultraviolet light by NASA GSFC's Solar Dynamics Observatory.

Two Coronal Holes

An eruption from the surface of the sun is conspicuous in the lower left portion of this July 6, 2015, image from NASA's Earth-orbiting Solar Dynamics Observatory (SDO).
An eruption from the surface of the sun is conspicuous in the lower left portion of this July 6, 2015, image from NASA's Earth-orbiting Solar Dynamics Observatory (SDO).

Solar Activity Seen at Sunspot Site Tracked by Mars Rover

This artist's concept shows NASA's two Voyager spacecraft exploring a turbulent region of space known as the heliosheath, the outer shell of the bubble of charged particles around our sun.
This artist's concept shows NASA's two Voyager spacecraft exploring a turbulent region of space known as the heliosheath, the outer shell of the bubble of charged particles around our sun.

Voyagers in the Heliosheath (Cropped)

Sparked by a medium-sized (C-class) flare, a long, magnetic filament burst out from the Sun, producing one of the best shows that SDO has seen (Aug. 31, 2012).
Sparked by a medium-sized (C-class) flare, a long, magnetic filament burst out from the Sun, producing one of the best shows that SDO has seen (Aug. 31, 2012).

Magnificent Outburst

This composite image combines NASA's Extreme Ultravoilet Imaging Telescope images from three wavelengths into one that reveals solar features unique to each wavelength.
This composite image combines NASA's Extreme Ultravoilet Imaging Telescope images from three wavelengths into one that reveals solar features unique to each wavelength.

Color Composite of Solar Features

A large, dark coronal hole at the bottom of the Sun has been the most dominant feature this week (Jan. 29, 2014) as seen by NASA GSFC's Solar Dynamics Observatory.
A large, dark coronal hole at the bottom of the Sun has been the most dominant feature this week (Jan. 29, 2014) as seen by NASA GSFC's Solar Dynamics Observatory.

Substantial Coronal Hole

NASA's Solar TErrestrial RElations Observatory (STEREO) satellites have provided the first three-dimensional images of the Sun. The structure of the corona shows well in this image.
NASA's Solar TErrestrial RElations Observatory (STEREO) satellites have provided the first three-dimensional images of the Sun. The structure of the corona shows well in this image.

Full Disk Image of the Sun, March 26, 2007 (Anaglyph)

The structure of the Sun's corona shows well in this image from NASA's Solar TErrestrial RElations Observatory (STEREO) satellite.
The structure of the Sun's corona shows well in this image from NASA's Solar TErrestrial RElations Observatory (STEREO) satellite.

Close-up View of an Active Region of the Sun, March 23, 2007

A small, but complex mass of plasma gyrated and spun about over the course of 40 hours above the surface of the Sun taken by NASA's GSFC Solar Dynamics Observatory on Sept. 1-3, 2015.
A small, but complex mass of plasma gyrated and spun about over the course of 40 hours above the surface of the Sun taken by NASA's GSFC Solar Dynamics Observatory on Sept. 1-3, 2015.

Tangled up in Blue

NASA's Extreme Ultraviolet Imaging Telescope aboard ESA's SOHO spacecraft took this image of a huge, handle-shaped prominence in 1999. Prominences are huge clouds of relatively cool dense plasma suspended in the Sun's hot, thin corona.
NASA's Extreme Ultraviolet Imaging Telescope aboard ESA's SOHO spacecraft took this image of a huge, handle-shaped prominence in 1999. Prominences are huge clouds of relatively cool dense plasma suspended in the Sun's hot, thin corona.

Handle-shaped Prominence

This view from NASA's Solar TErrestrial RElations Observatory satellite will aid scientists' ability to understand solar physics to improve space weather forecasting.
This view from NASA's Solar TErrestrial RElations Observatory satellite will aid scientists' ability to understand solar physics to improve space weather forecasting.

Closer View of the Equatorial Region of the Sun, March 24, 2007

An artist's concept illustrates the positions of the Voyager spacecraft in relation to structures formed around our Sun by the solar wind.
An artist's concept illustrates the positions of the Voyager spacecraft in relation to structures formed around our Sun by the solar wind.

Voyager Approaches Final Frontier

Artist's rendering of the the Near Earth Asteroid Rendezvous (NEAR) spacecraft's rendezvous with the asteroid Eros.
Artist's rendering of the the Near Earth Asteroid Rendezvous (NEAR) spacecraft's rendezvous with the asteroid Eros.

NASA's NEAR Spacecraft's Rendezvous with Asteroid Eros (Artist's Concept)

The dark region seen on the face of the sun at the end of March 2013 is a coronal hole (just above and to the right of the middle of the picture), which is a source of fast solar wind leaving the sun in this image from NASA's Solar Dynamic Observatory.
The dark region seen on the face of the sun at the end of March 2013 is a coronal hole (just above and to the right of the middle of the picture), which is a source of fast solar wind leaving the sun in this image from NASA's Solar Dynamic Observatory.

Pulses from the Sun

NASA's Solar TErrestrial RElations Observatory satellites have provided the first 3-dimensional images of the Sun. This view will aid scientists' ability to understand solar physics to improve space weather forecasting. .
NASA's Solar TErrestrial RElations Observatory satellites have provided the first 3-dimensional images of the Sun. This view will aid scientists' ability to understand solar physics to improve space weather forecasting. .

Close-up View of an Active Region of the Sun, March 23, 2007 (Anaglyph)

Radio telescopes cannot see Voyager 1 in visible light, but rather
Radio telescopes cannot see Voyager 1 in visible light, but rather

Voyager Signal Spotted By Earth Radio Telescopes

This still image from an animation from NASA GSFC's Solar Dynamics Observatory shows a single plume of plasma, many times taller than the diameter of Earth, spewing streams of particles for over two days (Aug. 17-19, 2015) before breaking apart.
This still image from an animation from NASA GSFC's Solar Dynamics Observatory shows a single plume of plasma, many times taller than the diameter of Earth, spewing streams of particles for over two days (Aug. 17-19, 2015) before breaking apart.

Eiffel Tower Plume

The image taken by the Oschin Schmidt Telescope, shows the star AC +79 3888, also known as Gliese 445. NASA's Voyager 1 spacecraft, which is on a trajectory out of our solar system, is headed toward an encounter with AC +79 3888 (circled in red).
The image taken by the Oschin Schmidt Telescope, shows the star AC +79 3888, also known as Gliese 445. NASA's Voyager 1 spacecraft, which is on a trajectory out of our solar system, is headed toward an encounter with AC +79 3888 (circled in red).

Heading toward Gliese 445

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