09-02-2015 04:54 PM CET
europeanspaceagency posted a photo:
This four-image mosaic comprises images taken from a distance of 28.7 km from the centre of Comet 67P/Churyumov-Gerasimenko on 3 February. The image resolution is 2.4 m/pixel and the individual 1024 x 1024 frames measure 2.5 km across. The mosaic has been slightly cropped, and it measures 4.2 x 4.6 km.
These are the last images taken by Rosetta's NAVCAM before the spacecraft left its bound orbit around the comet at 28 km from the centre. On 4 February, Rosetta moved into a new operating phase characterised by a series of flybys past 67P/C-G at a range of distances, the first of which will be the very close encounter planned for next weekend, when Rosetta will pass just 6 km from the surface of the comet on 14 February.
More information and the four individual images making up the montage are available via the blog: CometWatch – 3 February.
Credit: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0
This work is licenced under the Creative Commons Attribution-ShareAlike 3.0 IGO (CC BY-SA 3.0 IGO) licence. The user is allowed to reproduce, distribute, adapt, translate and publicly perform this publication, without explicit permission, provided that the content is accompanied by an acknowledgement that the source is credited as 'European Space Agency – ESA', a direct link to the licence text is provided and that it is clearly indicated if changes were made to the original content. Adaptation/translation/
This four-image mosaic comprises images taken from a distance of 28.7 km from the centre of Comet 67P/Churyumov-Gerasimenko on 3 February. The image resolution is 2.4 m/pixel and the individual 1024 x 1024 frames measure 2.5 km across. The mosaic has been slightly cropped, and it measures 4.2 x 4.6 km.
These are the last images taken by Rosetta's NAVCAM before the spacecraft left its bound orbit around the comet at 28 km from the centre. On 4 February, Rosetta moved into a new operating phase characterised by a series of flybys past 67P/C-G at a range of distances, the first of which will be the very close encounter planned for next weekend, when Rosetta will pass just 6 km from the surface of the comet on 14 February.
More information and the four individual images making up the montage are available via the blog: CometWatch – 3 February.
Credit: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0
This work is licenced under the Creative Commons Attribution-ShareAlike 3.0 IGO (CC BY-SA 3.0 IGO) licence. The user is allowed to reproduce, distribute, adapt, translate and publicly perform this publication, without explicit permission, provided that the content is accompanied by an acknowledgement that the source is credited as 'European Space Agency – ESA', a direct link to the licence text is provided and that it is clearly indicated if changes were made to the original content. Adaptation/translation/
09-02-2015 04:54 PM CET
europeanspaceagency posted a photo:
![Comet 67P on 3 February 2014 - NAVCAM [d]](https://blogger.googleusercontent.com/img/proxy/AVvXsEjznt55nx55FS6LiYUbly8z8ZkMGEhoeowWFlXod4Y8Q4SUpimql293xez6eCN97w1PPpARd3zCpyvydtoOGjEq2ZVhzV0zKUPbvG55xIOPcGbc5AqQ9WkEgyhOIkLICBrRm_qZ1TZWLAfAFLd_ZYRTFTrlCup5cAA-Sy37RnF7=s0-d-e1-ft)
One of four NAVCAM mosaic images of Comet 67P/Churyumov-Gerasimenko, taken on 3 February 2015 when Rosetta was at a distance of 28.7 km from the centre of the comet. Each 1024 x 1024 frame measures about 2.4 km across. These are the last images taken by Rosetta's NAVCAM before the spacecraft left its bound orbit around the comet at 28 km from the centre. On 4 February, Rosetta moved into a new operating phase characterised by a series of flybys past 67P/C-G at a range of distances, the first of which will be the very close encounter planned for next weekend, when Rosetta will pass just 6 km from the surface of the comet on 14 February.
More information and the four individual images making up the montage are available via the blog: CometWatch – 3 February.
Credit: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0
This work is licenced under the Creative Commons Attribution-ShareAlike 3.0 IGO (CC BY-SA 3.0 IGO) licence. The user is allowed to reproduce, distribute, adapt, translate and publicly perform this publication, without explicit permission, provided that the content is accompanied by an acknowledgement that the source is credited as 'European Space Agency – ESA', a direct link to the licence text is provided and that it is clearly indicated if changes were made to the original content. Adaptation/translation/
One of four NAVCAM mosaic images of Comet 67P/Churyumov-Gerasimenko, taken on 3 February 2015 when Rosetta was at a distance of 28.7 km from the centre of the comet. Each 1024 x 1024 frame measures about 2.4 km across. These are the last images taken by Rosetta's NAVCAM before the spacecraft left its bound orbit around the comet at 28 km from the centre. On 4 February, Rosetta moved into a new operating phase characterised by a series of flybys past 67P/C-G at a range of distances, the first of which will be the very close encounter planned for next weekend, when Rosetta will pass just 6 km from the surface of the comet on 14 February.
More information and the four individual images making up the montage are available via the blog: CometWatch – 3 February.
Credit: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0
This work is licenced under the Creative Commons Attribution-ShareAlike 3.0 IGO (CC BY-SA 3.0 IGO) licence. The user is allowed to reproduce, distribute, adapt, translate and publicly perform this publication, without explicit permission, provided that the content is accompanied by an acknowledgement that the source is credited as 'European Space Agency – ESA', a direct link to the licence text is provided and that it is clearly indicated if changes were made to the original content. Adaptation/translation/
09-02-2015 04:54 PM CET
europeanspaceagency posted a photo:
![Comet 67P on 3 February 2014 - NAVCAM [c]](https://blogger.googleusercontent.com/img/proxy/AVvXsEjBdDtgvwWbFG358BwAhJwgG4hLRZKfs-Xz5IShVQBdEXHQp4pJ4kBnYmz6BO-dKzQA2WuVcZqElA15qTAdq_-knVTaNNb7RN8o2BjM0_lPFhz_oge2JElclfHaWz5JCVY7EdgPyeaFDSouIZuUCMv75IyUEbRRukqSZ-i1ZcU-=s0-d-e1-ft)
One of four NAVCAM mosaic images of Comet 67P/Churyumov-Gerasimenko, taken on 3 February 2015 when Rosetta was at a distance of 28.7 km from the centre of the comet. Each 1024 x 1024 frame measures about 2.4 km across. These are the last images taken by Rosetta's NAVCAM before the spacecraft left its bound orbit around the comet at 28 km from the centre. On 4 February, Rosetta moved into a new operating phase characterised by a series of flybys past 67P/C-G at a range of distances, the first of which will be the very close encounter planned for next weekend, when Rosetta will pass just 6 km from the surface of the comet on 14 February.
More information and the four individual images making up the montage are available via the blog: CometWatch – 3 February.
Credit: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0
This work is licenced under the Creative Commons Attribution-ShareAlike 3.0 IGO (CC BY-SA 3.0 IGO) licence. The user is allowed to reproduce, distribute, adapt, translate and publicly perform this publication, without explicit permission, provided that the content is accompanied by an acknowledgement that the source is credited as 'European Space Agency – ESA', a direct link to the licence text is provided and that it is clearly indicated if changes were made to the original content. Adaptation/translation/
One of four NAVCAM mosaic images of Comet 67P/Churyumov-Gerasimenko, taken on 3 February 2015 when Rosetta was at a distance of 28.7 km from the centre of the comet. Each 1024 x 1024 frame measures about 2.4 km across. These are the last images taken by Rosetta's NAVCAM before the spacecraft left its bound orbit around the comet at 28 km from the centre. On 4 February, Rosetta moved into a new operating phase characterised by a series of flybys past 67P/C-G at a range of distances, the first of which will be the very close encounter planned for next weekend, when Rosetta will pass just 6 km from the surface of the comet on 14 February.
More information and the four individual images making up the montage are available via the blog: CometWatch – 3 February.
Credit: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0
This work is licenced under the Creative Commons Attribution-ShareAlike 3.0 IGO (CC BY-SA 3.0 IGO) licence. The user is allowed to reproduce, distribute, adapt, translate and publicly perform this publication, without explicit permission, provided that the content is accompanied by an acknowledgement that the source is credited as 'European Space Agency – ESA', a direct link to the licence text is provided and that it is clearly indicated if changes were made to the original content. Adaptation/translation/
09-02-2015 04:54 PM CET
europeanspaceagency posted a photo:
![Comet 67P on 3 February 2014 - NAVCAM [a]](https://blogger.googleusercontent.com/img/proxy/AVvXsEiAVR0SqYiNC7masdaj8EwAgQSVeo5bJT1LC_CgeJrfrBKS1oXuhpA4cpMbl1i4OtfJlEtpF54IQtqr2xVDi-Ml49K2sCx_g7BgC_gLk7ycRubwlm7vpJ2i6EhGvXO034mKcdbbbV_wX-IgnZ4mPSulJuZc-0V_fUAy6WDlRxKK=s0-d-e1-ft)
One of four NAVCAM mosaic images of Comet 67P/Churyumov-Gerasimenko, taken on 3 February 2015 when Rosetta was at a distance of 28.7 km from the centre of the comet. Each 1024 x 1024 frame measures about 2.4 km across. These are the last images taken by Rosetta's NAVCAM before the spacecraft left its bound orbit around the comet at 28 km from the centre. On 4 February, Rosetta moved into a new operating phase characterised by a series of flybys past 67P/C-G at a range of distances, the first of which will be the very close encounter planned for next weekend, when Rosetta will pass just 6 km from the surface of the comet on 14 February.
More information and the four individual images making up the montage are available via the blog: CometWatch – 3 February.
Credit: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0
This work is licenced under the Creative Commons Attribution-ShareAlike 3.0 IGO (CC BY-SA 3.0 IGO) licence. The user is allowed to reproduce, distribute, adapt, translate and publicly perform this publication, without explicit permission, provided that the content is accompanied by an acknowledgement that the source is credited as 'European Space Agency – ESA', a direct link to the licence text is provided and that it is clearly indicated if changes were made to the original content. Adaptation/translation/
One of four NAVCAM mosaic images of Comet 67P/Churyumov-Gerasimenko, taken on 3 February 2015 when Rosetta was at a distance of 28.7 km from the centre of the comet. Each 1024 x 1024 frame measures about 2.4 km across. These are the last images taken by Rosetta's NAVCAM before the spacecraft left its bound orbit around the comet at 28 km from the centre. On 4 February, Rosetta moved into a new operating phase characterised by a series of flybys past 67P/C-G at a range of distances, the first of which will be the very close encounter planned for next weekend, when Rosetta will pass just 6 km from the surface of the comet on 14 February.
More information and the four individual images making up the montage are available via the blog: CometWatch – 3 February.
Credit: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0
This work is licenced under the Creative Commons Attribution-ShareAlike 3.0 IGO (CC BY-SA 3.0 IGO) licence. The user is allowed to reproduce, distribute, adapt, translate and publicly perform this publication, without explicit permission, provided that the content is accompanied by an acknowledgement that the source is credited as 'European Space Agency – ESA', a direct link to the licence text is provided and that it is clearly indicated if changes were made to the original content. Adaptation/translation/
09-02-2015 04:54 PM CET
europeanspaceagency posted a photo:
![Comet 67P on 3 February 2014 - NAVCAM [b]](https://blogger.googleusercontent.com/img/proxy/AVvXsEgnUOS8J33ZHsDXGgftDvLbHRXeQK4Yd9rsEbqFuMDPc7Dz8tNfM6OGhspntYCIOgquL8hfVuDrQ69NhY2ZtijkaEFF5wPvmpAyKhZXBkzlPNSetwvjNz26u6uXx4oM6ah20ns2joDiacmuTry2K9drfL22d90uR1tjp0cKPGP2=s0-d-e1-ft)
One of four NAVCAM mosaic images of Comet 67P/Churyumov-Gerasimenko, taken on 3 February 2015 when Rosetta was at a distance of 28.7 km from the centre of the comet. Each 1024 x 1024 frame measures about 2.4 km across. These are the last images taken by Rosetta's NAVCAM before the spacecraft left its bound orbit around the comet at 28 km from the centre. On 4 February, Rosetta moved into a new operating phase characterised by a series of flybys past 67P/C-G at a range of distances, the first of which will be the very close encounter planned for next weekend, when Rosetta will pass just 6 km from the surface of the comet on 14 February.
More information and the four individual images making up the montage are available via the blog: CometWatch – 3 February.
Credit: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0
This work is licenced under the Creative Commons Attribution-ShareAlike 3.0 IGO (CC BY-SA 3.0 IGO) licence. The user is allowed to reproduce, distribute, adapt, translate and publicly perform this publication, without explicit permission, provided that the content is accompanied by an acknowledgement that the source is credited as 'European Space Agency – ESA', a direct link to the licence text is provided and that it is clearly indicated if changes were made to the original content. Adaptation/translation/
One of four NAVCAM mosaic images of Comet 67P/Churyumov-Gerasimenko, taken on 3 February 2015 when Rosetta was at a distance of 28.7 km from the centre of the comet. Each 1024 x 1024 frame measures about 2.4 km across. These are the last images taken by Rosetta's NAVCAM before the spacecraft left its bound orbit around the comet at 28 km from the centre. On 4 February, Rosetta moved into a new operating phase characterised by a series of flybys past 67P/C-G at a range of distances, the first of which will be the very close encounter planned for next weekend, when Rosetta will pass just 6 km from the surface of the comet on 14 February.
More information and the four individual images making up the montage are available via the blog: CometWatch – 3 February.
Credit: ESA/Rosetta/NAVCAM – CC BY-SA IGO 3.0
This work is licenced under the Creative Commons Attribution-ShareAlike 3.0 IGO (CC BY-SA 3.0 IGO) licence. The user is allowed to reproduce, distribute, adapt, translate and publicly perform this publication, without explicit permission, provided that the content is accompanied by an acknowledgement that the source is credited as 'European Space Agency – ESA', a direct link to the licence text is provided and that it is clearly indicated if changes were made to the original content. Adaptation/translation/
09-02-2015 04:19 PM CET
europeanspaceagency posted a photo:
Swirls of chocolate, caramel and cream – this image is definitely one to trigger sweet-toothed cravings. Smooth cream-coloured plateaus surrounded by cocoa-dusted ridges interspersed with caramel-hued streaks create a scene reminiscent of a cosmic cappuccino.
This picture is, perhaps surprisingly, from ESA’s Mars Express, which has been exploring and imaging the martian surface and atmosphere since 2003. We may be used to seeing numerous images of red and brown-hued soil and ruddy landscapes peppered with craters, but the Red Planet isn’t always so red.
The bright white region of this image shows the icy cap that covers Mars’ south pole, composed of frozen water and carbon dioxide. While it looks smooth in this image, at close quarters the cap is a layered mix of peaks, troughs and flat plains, and has been likened in appearance to swiss cheese.
The southern cap reaches some 3 km thick in places, and is around 350 km in diameter. This icy region is permanent; in the martian winter another, thinner ice cap forms over the top of it, stretching further out across the planet and disappearing again when the weather warms up.
The cap is around 150 km north of Mars’ geographical south pole and Mars Express has shed light on why this ice cap is displaced. Deep impact craters – notably the Hellas Basin, the largest impact structure on the entire planet at 7 km deep and 2300 km across – funnel the strong winds that blow across Mars towards its southern pole, creating a mix of different low- and high-pressure systems. The carbon dioxide in the polar cap sublimates at different rates in these regions with contrasting pressure, resulting in the cap’s lopsided structure.
Mars Express imaged this area of Mars on 17 December 2012, in infrared, green and blue light, using its High Resolution Stereo Camera. This image was processed by Bill Dunford, using data available from the ESA Planetary Science Archive.
Credit: ESA/DLR/FU Berlin / Bill Dunford
Swirls of chocolate, caramel and cream – this image is definitely one to trigger sweet-toothed cravings. Smooth cream-coloured plateaus surrounded by cocoa-dusted ridges interspersed with caramel-hued streaks create a scene reminiscent of a cosmic cappuccino.
This picture is, perhaps surprisingly, from ESA’s Mars Express, which has been exploring and imaging the martian surface and atmosphere since 2003. We may be used to seeing numerous images of red and brown-hued soil and ruddy landscapes peppered with craters, but the Red Planet isn’t always so red.
The bright white region of this image shows the icy cap that covers Mars’ south pole, composed of frozen water and carbon dioxide. While it looks smooth in this image, at close quarters the cap is a layered mix of peaks, troughs and flat plains, and has been likened in appearance to swiss cheese.
The southern cap reaches some 3 km thick in places, and is around 350 km in diameter. This icy region is permanent; in the martian winter another, thinner ice cap forms over the top of it, stretching further out across the planet and disappearing again when the weather warms up.
The cap is around 150 km north of Mars’ geographical south pole and Mars Express has shed light on why this ice cap is displaced. Deep impact craters – notably the Hellas Basin, the largest impact structure on the entire planet at 7 km deep and 2300 km across – funnel the strong winds that blow across Mars towards its southern pole, creating a mix of different low- and high-pressure systems. The carbon dioxide in the polar cap sublimates at different rates in these regions with contrasting pressure, resulting in the cap’s lopsided structure.
Mars Express imaged this area of Mars on 17 December 2012, in infrared, green and blue light, using its High Resolution Stereo Camera. This image was processed by Bill Dunford, using data available from the ESA Planetary Science Archive.
Credit: ESA/DLR/FU Berlin / Bill Dunford
09-02-2015 12:35 PM CET
europeanspaceagency posted a photo:
In the centre of this image, taken with the NASA/ESA Hubble Space Telescope, is the galaxy cluster SDSS J1038+4849 — and it seems to be smiling.
You can make out its two orange eyes and white button nose. In the case of this “happy face”, the two eyes are very bright galaxies and the misleading smile lines are actually arcs caused by an effect known as strong gravitational lensing.
Galaxy clusters are the most massive structures in the Universe and exert such a powerful gravitational pull that they warp the spacetime around them and act as cosmic lenses which can magnify, distort and bend the light behind them. This phenomenon, crucial to many of Hubble’s discoveries, can be explained by Einstein’s theory of general relativity.
In this special case of gravitational lensing, a ring — known as an Einstein Ring — is produced from this bending of light, a consequence of the exact and symmetrical alignment of the source, lens and observer and resulting in the ring-like structure we see here.
Hubble has provided astronomers with the tools to probe these massive galaxies and model their lensing effects, allowing us to peer further into the early Universe than ever before. This object was studied by Hubble’s Wide Field and Planetary Camera 2 (WFPC2) and Wide Field Camera 3 (WFC3) as part of a survey of strong lenses.
A version of this image was entered into the Hubble’s Hidden Treasures image processing competition by contestant Judy Schmidt.
Credit: NASA & ESA
In the centre of this image, taken with the NASA/ESA Hubble Space Telescope, is the galaxy cluster SDSS J1038+4849 — and it seems to be smiling.
You can make out its two orange eyes and white button nose. In the case of this “happy face”, the two eyes are very bright galaxies and the misleading smile lines are actually arcs caused by an effect known as strong gravitational lensing.
Galaxy clusters are the most massive structures in the Universe and exert such a powerful gravitational pull that they warp the spacetime around them and act as cosmic lenses which can magnify, distort and bend the light behind them. This phenomenon, crucial to many of Hubble’s discoveries, can be explained by Einstein’s theory of general relativity.
In this special case of gravitational lensing, a ring — known as an Einstein Ring — is produced from this bending of light, a consequence of the exact and symmetrical alignment of the source, lens and observer and resulting in the ring-like structure we see here.
Hubble has provided astronomers with the tools to probe these massive galaxies and model their lensing effects, allowing us to peer further into the early Universe than ever before. This object was studied by Hubble’s Wide Field and Planetary Camera 2 (WFPC2) and Wide Field Camera 3 (WFC3) as part of a survey of strong lenses.
A version of this image was entered into the Hubble’s Hidden Treasures image processing competition by contestant Judy Schmidt.
Credit: NASA & ESA
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