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This frame from an animation portrays a comet as it approaches the inner solar system. Light from the Sun warms the comet core, an object so small it cannot be seen at this scale.
This frame from an animation portrays a comet as it approaches the inner solar system. Light from the Sun warms the comet core, an object so small it cannot be seen at this scale.

Comet Illustration (Animation)

This frame from an animation portrays a comet as it approaches the inner solar system. Light from the Sun warms the comet core, an object so small it cannot be seen at this scale.

Target: Comet
ID#: PIA21749
Added: 2017-07-25

Views: 891

Comet Illustration (Animation)

This frame from an animation portrays a comet as it approaches the inner solar system. Light from the Sun warms the comet core, an object so small it cannot be seen at this scale.

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This frame from a sequence of four images of the asteroid name 2014 AA, seen as a speck of light moving relative to the background stars, is a small asteroid, observed by NASA's Catalina Sky Survey. It was, at the time, about as far away as the moon.
This frame from a sequence of four images of the asteroid name 2014 AA, seen as a speck of light moving relative to the background stars, is a small asteroid, observed by NASA's Catalina Sky Survey. It was, at the time, about as far away as the moon.

Sky Survey Detected This Small Asteroid

This frame from a sequence of four images of the asteroid name 2014 AA, seen as a speck of light moving relative to the background stars, is a small asteroid, observed by NASA's Catalina Sky Survey. It was, at the time, about as far away as the moon.

Target: Asteroid
Mission: Catalina Sky Survey (CSS)
ID#: PIA21712
Added: 2017-06-30

Views: 1188

Sky Survey Detected This Small Asteroid

This frame from a sequence of four images of the asteroid name 2014 AA, seen as a speck of light moving relative to the background stars, is a small asteroid, observed by NASA's Catalina Sky Survey. It was, at the time, about as far away as the moon.

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This frame from an animation shows NASA's NEOWISE's third year of survey data with the spacecraft discovering 97 previously unknown celestial objects in the last year.
This frame from an animation shows NASA's NEOWISE's third year of survey data with the spacecraft discovering 97 previously unknown celestial objects in the last year.

Three Years of NEOWISE Data

This frame from an animation shows NASA's NEOWISE's third year of survey data with the spacecraft discovering 97 previously unknown celestial objects in the last year.

Target: Asteroid
Mission: NEOWISE Project
Instrument: NEOWISE Telescope
ID#: PIA21653
Added: 2017-06-05

Views: 2608

Three Years of NEOWISE Data

This frame from an animation shows NASA's NEOWISE's third year of survey data with the spacecraft discovering 97 previously unknown celestial objects in the last year.

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This frame from a movie of asteroid 2014 JO25 was generated using radar data collected by NASA's 230-foot-wide (70-meter) Deep Space Network antenna at Goldstone, California on April 19, 2017.
This frame from a movie of asteroid 2014 JO25 was generated using radar data collected by NASA's 230-foot-wide (70-meter) Deep Space Network antenna at Goldstone, California on April 19, 2017.

New Radar Images of Asteroid 2014 JO25

This frame from a movie of asteroid 2014 JO25 was generated using radar data collected by NASA's 230-foot-wide (70-meter) Deep Space Network antenna at Goldstone, California on April 19, 2017.

Target: Asteroid
Mission: Goldstone Deep Space Network (DSN)
Instrument: Goldstone Solar System Radar
ID#: PIA21597
Added: 2017-05-09

Views: 655

New Radar Images of Asteroid 2014 JO25

This frame from a movie of asteroid 2014 JO25 was generated using radar data collected by NASA's 230-foot-wide (70-meter) Deep Space Network antenna at Goldstone, California on April 19, 2017.

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This composite of 30 images of asteroid 2014 JO25 was generated with radar data collected using NASA's Goldstone Solar System Radar in California's Mojave Desert.
This composite of 30 images of asteroid 2014 JO25 was generated with radar data collected using NASA's Goldstone Solar System Radar in California's Mojave Desert.

Radar Imagery of Asteroid 2014 JO25

This composite of 30 images of asteroid 2014 JO25 was generated with radar data collected using NASA's Goldstone Solar System Radar in California's Mojave Desert.

Target: Asteroid
Mission: Goldstone Deep Space Network (DSN)
Instrument: Goldstone Solar System Radar
ID#: PIA21594
Added: 2017-04-18

Views: 2800

Radar Imagery of Asteroid 2014 JO25

This composite of 30 images of asteroid 2014 JO25 was generated with radar data collected using NASA's Goldstone Solar System Radar in California's Mojave Desert.

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This image showcases changes identified in high-resolution images of Comet 67P/Churyumov-Gerasimenko during more than two years of monitoring by ESA's Rosetta spacecraft.
This image showcases changes identified in high-resolution images of Comet 67P/Churyumov-Gerasimenko during more than two years of monitoring by ESA's Rosetta spacecraft.

Comet 67P Changes

This image showcases changes identified in high-resolution images of Comet 67P/Churyumov-Gerasimenko during more than two years of monitoring by ESA's Rosetta spacecraft.

Target: Comet
Mission: Rosetta
Spacecraft: Rosetta
Instrument: OSIRIS
ID#: PIA21566
Added: 2017-03-21

Views: 1766

Comet 67P Changes

This image showcases changes identified in high-resolution images of Comet 67P/Churyumov-Gerasimenko during more than two years of monitoring by ESA's Rosetta spacecraft.

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A 100 foot-wide, 28-million-pound boulder, was found to have moved 460 feet on comet 67P/Churyumov-Gerasimenko in the lead up to perihelion in August 2015, when the comet's activity was at its highest.
A 100 foot-wide, 28-million-pound boulder, was found to have moved 460 feet on comet 67P/Churyumov-Gerasimenko in the lead up to perihelion in August 2015, when the comet's activity was at its highest.

Rosetta's Moving Cometary Boulder

A 100 foot-wide, 28-million-pound boulder, was found to have moved 460 feet on comet 67P/Churyumov-Gerasimenko in the lead up to perihelion in August 2015, when the comet's activity was at its highest.

Target: Comet
Mission: Rosetta
Spacecraft: Rosetta
Instrument: OSIRIS
ID#: PIA21565
Added: 2017-03-21

Views: 1464

Rosetta's Moving Cometary Boulder

A 100 foot-wide, 28-million-pound boulder, was found to have moved 460 feet on comet 67P/Churyumov-Gerasimenko in the lead up to perihelion in August 2015, when the comet's activity was at its highest.

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Several sites of cliff collapse on comet 67P/Churyumov-Gerasimenko were identified during ESA's Rosetta's mission. The yellow arrows mark the fractures where the detachment occurred.
Several sites of cliff collapse on comet 67P/Churyumov-Gerasimenko were identified during ESA's Rosetta's mission. The yellow arrows mark the fractures where the detachment occurred.

Cliff Collapses on Rosetta's Comet

Several sites of cliff collapse on comet 67P/Churyumov-Gerasimenko were identified during ESA's Rosetta's mission. The yellow arrows mark the fractures where the detachment occurred.

Target: Comet
Mission: Rosetta
Spacecraft: Rosetta
Instrument: OSIRIS
ID#: PIA21564
Added: 2017-03-21

Views: 1017

Cliff Collapses on Rosetta's Comet

Several sites of cliff collapse on comet 67P/Churyumov-Gerasimenko were identified during ESA's Rosetta's mission. The yellow arrows mark the fractures where the detachment occurred.

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This composite of 11 images of asteroid 2017 BQ6 was generated with radar data collected using NASA's Goldstone Solar System Radar in California's Mojave Desert on Feb. 5, 2017.
This composite of 11 images of asteroid 2017 BQ6 was generated with radar data collected using NASA's Goldstone Solar System Radar in California's Mojave Desert on Feb. 5, 2017.

Radar Images of Asteroid 2017 BQ6

This composite of 11 images of asteroid 2017 BQ6 was generated with radar data collected using NASA's Goldstone Solar System Radar in California's Mojave Desert on Feb. 5, 2017.

Target: Asteroid
Mission: Goldstone Deep Space Network (DSN)
Instrument: Goldstone Solar System Radar
ID#: PIA21453
Added: 2017-02-10

Views: 1718

Radar Images of Asteroid 2017 BQ6

This composite of 11 images of asteroid 2017 BQ6 was generated with radar data collected using NASA's Goldstone Solar System Radar in California's Mojave Desert on Feb. 5, 2017.

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This composite of 25 images of asteroid 2017 BQ6 was generated with radar data collected using NASA's Goldstone Solar System Radar in California's Mojave Desert.
This composite of 25 images of asteroid 2017 BQ6 was generated with radar data collected using NASA's Goldstone Solar System Radar in California's Mojave Desert.

Angular Asteroid Composite

This composite of 25 images of asteroid 2017 BQ6 was generated with radar data collected using NASA's Goldstone Solar System Radar in California's Mojave Desert.

Target: Asteroid
Mission: Goldstone Deep Space Network (DSN)
Instrument: Goldstone Solar System Radar
ID#: PIA21452
Added: 2017-02-10

Views: 2015

Angular Asteroid Composite

This composite of 25 images of asteroid 2017 BQ6 was generated with radar data collected using NASA's Goldstone Solar System Radar in California's Mojave Desert.

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NASA's planet-hunting Kepler spacecraft observed the comet during the final month of the Rosetta mission, while the comet was not visible from Earth. This is a frame from an animation composed of images from Kepler of the comet.
NASA's planet-hunting Kepler spacecraft observed the comet during the final month of the Rosetta mission, while the comet was not visible from Earth. This is a frame from an animation composed of images from Kepler of the comet.

Comet 67P Seen by Kepler

NASA's planet-hunting Kepler spacecraft observed the comet during the final month of the Rosetta mission, while the comet was not visible from Earth. This is a frame from an animation composed of images from Kepler of the comet.

Target: Comet
Mission: Kepler, Rosetta
ID#: PIA21072
Added: 2016-10-07

Views: 1973

Comet 67P Seen by Kepler

NASA's planet-hunting Kepler spacecraft observed the comet during the final month of the Rosetta mission, while the comet was not visible from Earth. This is a frame from an animation composed of images from Kepler of the comet.

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This view shows Comet 67P/Churyumov-Gerasimenko as seen by the OSIRIS wide-angle camera on ESA's Rosetta spacecraft on September 29, 2016, when Rosetta was at an altitude of 14 miles (23 kilometers).
This view shows Comet 67P/Churyumov-Gerasimenko as seen by the OSIRIS wide-angle camera on ESA's Rosetta spacecraft on September 29, 2016, when Rosetta was at an altitude of 14 miles (23 kilometers).

Farewell Rosetta: ESA Mission to End on Comet Surface

This view shows Comet 67P/Churyumov-Gerasimenko as seen by the OSIRIS wide-angle camera on ESA's Rosetta spacecraft on September 29, 2016, when Rosetta was at an altitude of 14 miles (23 kilometers).

Target: Comet
Mission: Rosetta
Spacecraft: Rosetta
Instrument: OSIRIS
ID#: PIA21068
Added: 2016-09-29

Views: 1037

Farewell Rosetta: ESA Mission to End on Comet Surface

This view shows Comet 67P/Churyumov-Gerasimenko as seen by the OSIRIS wide-angle camera on ESA's Rosetta spacecraft on September 29, 2016, when Rosetta was at an altitude of 14 miles (23 kilometers).

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This frame from a movie shows the progression of NASA's Near-Earth Object Wide-field Survey Explorer (NEOWISE) investigation for the mission's first two years following its restart in December 2013. Green circles represent near-Earth objects.
This frame from a movie shows the progression of NASA's Near-Earth Object Wide-field Survey Explorer (NEOWISE) investigation for the mission's first two years following its restart in December 2013. Green circles represent near-Earth objects.

Two Years of NEOWISE Observations Mapped

This frame from a movie shows the progression of NASA's Near-Earth Object Wide-field Survey Explorer (NEOWISE) investigation for the mission's first two years following its restart in December 2013. Green circles represent near-Earth objects.

Target: Asteroid
Mission: NEOWISE Project
Instrument: NEOWISE Telescope
ID#: PIA20546
Added: 2016-04-05

Views: 1439

Two Years of NEOWISE Observations Mapped

This frame from a movie shows the progression of NASA's Near-Earth Object Wide-field Survey Explorer (NEOWISE) investigation for the mission's first two years following its restart in December 2013. Green circles represent near-Earth objects.

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These radar images of comet P/2016 BA14 were taken on March 22, 2016, by scientists using an antenna of NASA's Deep Space Network at Goldstone, CA. At the time, the comet was about 2.2 million miles (3.6 million kilometers) from Earth.
These radar images of comet P/2016 BA14 were taken on March 22, 2016, by scientists using an antenna of NASA's Deep Space Network at Goldstone, CA. At the time, the comet was about 2.2 million miles (3.6 million kilometers) from Earth.

Comet Scanned by NASA Radar

These radar images of comet P/2016 BA14 were taken on March 22, 2016, by scientists using an antenna of NASA's Deep Space Network at Goldstone, CA. At the time, the comet was about 2.2 million miles (3.6 million kilometers) from Earth.

Target: Comet
Mission: Goldstone Deep Space Network (DSN)
Instrument: Goldstone Solar System Radar
ID#: PIA19298
Added: 2016-03-29

Views: 1832

Comet Scanned by NASA Radar

These radar images of comet P/2016 BA14 were taken on March 22, 2016, by scientists using an antenna of NASA's Deep Space Network at Goldstone, CA. At the time, the comet was about 2.2 million miles (3.6 million kilometers) from Earth.

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These radar images of comet P/2016 BA14 were taken on March 23, 2016, by scientists using an antenna of NASA's Deep Space Network at Goldstone, California. At the time, the comet was about 2.2 million miles (3.6 million kilometers) from Earth.
These radar images of comet P/2016 BA14 were taken on March 23, 2016, by scientists using an antenna of NASA's Deep Space Network at Goldstone, California. At the time, the comet was about 2.2 million miles (3.6 million kilometers) from Earth.

Comet Frozen In Time by NASA Radar

These radar images of comet P/2016 BA14 were taken on March 23, 2016, by scientists using an antenna of NASA's Deep Space Network at Goldstone, California. At the time, the comet was about 2.2 million miles (3.6 million kilometers) from Earth.

Target: Comet
Mission: Goldstone Deep Space Network (DSN)
Instrument: Goldstone Solar System Radar
ID#: PIA20542
Added: 2016-03-24

Views: 2004

Comet Frozen In Time by NASA Radar

These radar images of comet P/2016 BA14 were taken on March 23, 2016, by scientists using an antenna of NASA's Deep Space Network at Goldstone, California. At the time, the comet was about 2.2 million miles (3.6 million kilometers) from Earth.

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The elongated asteroid in this radar image, named 2003 SD220, will safely fly past Earth on Dec. 24, 2015, at a distance of 6.8 million miles (11 million kilometers).
The elongated asteroid in this radar image, named 2003 SD220, will safely fly past Earth on Dec. 24, 2015, at a distance of 6.8 million miles (11 million kilometers).

Elongated Asteroid Will Safely Pass Earth on Christmas Eve

The elongated asteroid in this radar image, named 2003 SD220, will safely fly past Earth on Dec. 24, 2015, at a distance of 6.8 million miles (11 million kilometers).

Target: Asteroid
Mission: Goldstone Deep Space Network (DSN)
Instrument: Goldstone Solar System Radar
ID#: PIA20280
Added: 2015-12-23

Views: 2746

Elongated Asteroid Will Safely Pass Earth on Christmas Eve

The elongated asteroid in this radar image, named 2003 SD220, will safely fly past Earth on Dec. 24, 2015, at a distance of 6.8 million miles (11 million kilometers).

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This image of an asteroid that is at least 3,600 feet (1,100 meters) long was taken on Dec. 17, 2015, by scientists using NASA's 230-foot Deep Space Network antenna at Goldstone, California.
This image of an asteroid that is at least 3,600 feet (1,100 meters) long was taken on Dec. 17, 2015, by scientists using NASA's 230-foot Deep Space Network antenna at Goldstone, California.

Radar Image of 'Christmas Eve' Asteroid 2003 SD2020

This image of an asteroid that is at least 3,600 feet (1,100 meters) long was taken on Dec. 17, 2015, by scientists using NASA's 230-foot Deep Space Network antenna at Goldstone, California.

Target: Asteroid
Mission: Goldstone Deep Space Network (DSN)
Instrument: Goldstone Solar System Radar
ID#: PIA20279
Added: 2015-12-23

Views: 1231

Radar Image of 'Christmas Eve' Asteroid 2003 SD2020

This image of an asteroid that is at least 3,600 feet (1,100 meters) long was taken on Dec. 17, 2015, by scientists using NASA's 230-foot Deep Space Network antenna at Goldstone, California.

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Asteroid 1998 WT24 (left in December 2001, right on December 11, 2015) taken by NASA's the 230-foot (70-meter) DSS-14 antenna at Goldstone, California.
Asteroid 1998 WT24 (left in December 2001, right on December 11, 2015) taken by NASA's the 230-foot (70-meter) DSS-14 antenna at Goldstone, California.

Not Your Father's Asteroid

Asteroid 1998 WT24 (left in December 2001, right on December 11, 2015) taken by NASA's the 230-foot (70-meter) DSS-14 antenna at Goldstone, California.

Target: Asteroid
Mission: Goldstone Deep Space Network (DSN)
Instrument: Goldstone Solar System Radar
ID#: PIA20215
Added: 2015-12-17

Views: 8053

Not Your Father's Asteroid

Asteroid 1998 WT24 (left in December 2001, right on December 11, 2015) taken by NASA's the 230-foot (70-meter) DSS-14 antenna at Goldstone, California.

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An expanded view of comet C/2006 W3 (Christensen) is shown here. NASA's WISE spacecraft observed this comet on April 20th, 2010 as it traveled through the constellation Sagittarius.
An expanded view of comet C/2006 W3 (Christensen) is shown here. NASA's WISE spacecraft observed this comet on April 20th, 2010 as it traveled through the constellation Sagittarius.

Comet Christensen Has Carbon Gas

An expanded view of comet C/2006 W3 (Christensen) is shown here. NASA's WISE spacecraft observed this comet on April 20th, 2010 as it traveled through the constellation Sagittarius.

Target: Asteroid
Mission: NEOWISE Project
Instrument: NEOWISE Telescope
ID#: PIA20119
Added: 2015-11-23

Views: 2152

Comet Christensen Has Carbon Gas

An expanded view of comet C/2006 W3 (Christensen) is shown here. NASA's WISE spacecraft observed this comet on April 20th, 2010 as it traveled through the constellation Sagittarius.

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NASA's NEOWISE spacecraft observed the Oort cloud comet C/2006 W3 (Christensen) on April 20th, 2010, as it traveled through the constellation Sagittarius.
NASA's NEOWISE spacecraft observed the Oort cloud comet C/2006 W3 (Christensen) on April 20th, 2010, as it traveled through the constellation Sagittarius.

NEOWISE View of Comet Christensen

NASA's NEOWISE spacecraft observed the Oort cloud comet C/2006 W3 (Christensen) on April 20th, 2010, as it traveled through the constellation Sagittarius.

Target: Asteroid
Mission: NEOWISE Project
Instrument: NEOWISE Telescope
ID#: PIA20118
Added: 2015-11-23

Views: 2544

NEOWISE View of Comet Christensen

NASA's NEOWISE spacecraft observed the Oort cloud comet C/2006 W3 (Christensen) on April 20th, 2010, as it traveled through the constellation Sagittarius.

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The 230-foot (70-meter) DSS-14 antenna at Goldstone, Ca. obtained these radar images of asteroid 2015 TB145 on Oct. 31, 2015.
The 230-foot (70-meter) DSS-14 antenna at Goldstone, Ca. obtained these radar images of asteroid 2015 TB145 on Oct. 31, 2015.

Halloween Asteroid Rotation

The 230-foot (70-meter) DSS-14 antenna at Goldstone, Ca. obtained these radar images of asteroid 2015 TB145 on Oct. 31, 2015.

Target: Asteroid
Mission: Goldstone Deep Space Network (DSN)
Instrument: Goldstone Solar System Radar
ID#: PIA20043
Added: 2015-11-03

Views: 5523

Halloween Asteroid Rotation

The 230-foot (70-meter) DSS-14 antenna at Goldstone, Ca. obtained these radar images of asteroid 2015 TB145 on Oct. 31, 2015.

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This partial frame from an animation was generated using radar data collected by the National Science Foundation's 1,000-foot (305-meter) Arecibo Observatory in Puerto Rico.
This partial frame from an animation was generated using radar data collected by the National Science Foundation's 1,000-foot (305-meter) Arecibo Observatory in Puerto Rico.

Halloween Asteroid Rotation

This partial frame from an animation was generated using radar data collected by the National Science Foundation's 1,000-foot (305-meter) Arecibo Observatory in Puerto Rico.

Target: Asteroid
Instrument: Arecibo Observatory
ID#: PIA20041
Added: 2015-10-30

Views: 1509

Halloween Asteroid Rotation

This partial frame from an animation was generated using radar data collected by the National Science Foundation's 1,000-foot (305-meter) Arecibo Observatory in Puerto Rico.

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These first radar images of 2015 TB145 from the National Science Foundation's 1,000-foot (305-meter) Arecibo Observatory in Puerto Rico, indicate the near-Earth object is spherical in shape and approximately 2,000 feet (600 meters) in diameter.
These first radar images of 2015 TB145 from the National Science Foundation's 1,000-foot (305-meter) Arecibo Observatory in Puerto Rico, indicate the near-Earth object is spherical in shape and approximately 2,000 feet (600 meters) in diameter.

First Radar Images of Halloween Asteroid

These first radar images of 2015 TB145 from the National Science Foundation's 1,000-foot (305-meter) Arecibo Observatory in Puerto Rico, indicate the near-Earth object is spherical in shape and approximately 2,000 feet (600 meters) in diameter.

Target: Asteroid
Instrument: Arecibo Observatory
ID#: PIA20040
Added: 2015-10-30

Views: 1317

First Radar Images of Halloween Asteroid

These first radar images of 2015 TB145 from the National Science Foundation's 1,000-foot (305-meter) Arecibo Observatory in Puerto Rico, indicate the near-Earth object is spherical in shape and approximately 2,000 feet (600 meters) in diameter.

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Subsurface temperature maps of 67P/Churyumov-Gerasimenko, showing the southern hemisphere of the comet. The maps are based on observations obtained with ESA's MIRO instrument.
Subsurface temperature maps of 67P/Churyumov-Gerasimenko, showing the southern hemisphere of the comet. The maps are based on observations obtained with ESA's MIRO instrument.

Taking a Comet's Temperature

Subsurface temperature maps of 67P/Churyumov-Gerasimenko, showing the southern hemisphere of the comet. The maps are based on observations obtained with ESA's MIRO instrument.

Target: Comet
Mission: Rosetta
Spacecraft: Rosetta
Instrument: MIRO
ID#: PIA19970
Added: 2015-10-01

Views: 2752

Taking a Comet's Temperature

Subsurface temperature maps of 67P/Churyumov-Gerasimenko, showing the southern hemisphere of the comet. The maps are based on observations obtained with ESA's MIRO instrument.

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Image of the southern polar regions of comet 67P/Churyumov-Gerasimenko taken by Rosetta's Optical, Spectroscopic, and Infrared Remote Imaging System (OSIRIS) on September 29, 2014, when the comet was still experiencing the long southern winter.
Image of the southern polar regions of comet 67P/Churyumov-Gerasimenko taken by Rosetta's Optical, Spectroscopic, and Infrared Remote Imaging System (OSIRIS) on September 29, 2014, when the comet was still experiencing the long southern winter.

Taking a Comet's Temperature

Image of the southern polar regions of comet 67P/Churyumov-Gerasimenko taken by Rosetta's Optical, Spectroscopic, and Infrared Remote Imaging System (OSIRIS) on September 29, 2014, when the comet was still experiencing the long southern winter.

Target: Comet
Mission: Rosetta
Spacecraft: Rosetta
Instrument: OSIRIS
ID#: PIA19969
Added: 2015-10-01

Views: 2032

Taking a Comet's Temperature

Image of the southern polar regions of comet 67P/Churyumov-Gerasimenko taken by Rosetta's Optical, Spectroscopic, and Infrared Remote Imaging System (OSIRIS) on September 29, 2014, when the comet was still experiencing the long southern winter.

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