23-02-2015 03:17 PM CET
europeanspaceagency posted a photo:
This single frame Rosetta navigation camera image was taken from a distance of 198 km from the centre of Comet 67P/Churyumov-Gerasimenko on 18 February 2015. The 1024 x 1024 pixel image frame has a resolution of 16.9 m/pixel and measures 17.3 km across. The image is processed to bring out the details of the comet's activity.
More information is available via the blog: Closing in again - CometWatch 16 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/ derivatives must be distributed under the same licence terms as this publication. To view a copy of this license, please visit creativecommons.org/licenses/ by-sa/3.0/igo/
This single frame Rosetta navigation camera image was taken from a distance of 198 km from the centre of Comet 67P/Churyumov-Gerasimenko on 18 February 2015. The 1024 x 1024 pixel image frame has a resolution of 16.9 m/pixel and measures 17.3 km across. The image is processed to bring out the details of the comet's activity.
More information is available via the blog: Closing in again - CometWatch 16 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/
23-02-2015 11:34 AM CET
europeanspaceagency posted a photo:
Astronomical images often look like works of art. This picture of one of our nearest neighbouring galaxies, the Small Magellanic Cloud, is certainly no exception!
The scene is actually a collaboration between two cosmic artists — ESA’s Herschel space observatory and NASA’s Spitzer space telescope. The image is reminiscent of an artistic stipple or pointillist painting, with lots of small, distinct dots coming together to create a striking larger-scale view.
The colours within this image provide information about the temperature of the dust mixed with the gas throughout the galaxy. The slight green tint stretching towards the left of the frame and the red hue of the main body of the galaxy are from the Herschel observations, which highlight cold material, down to a chilly –260 degrees Celsius .
The brighter patches of blue were captured by Spitzer. These regions are made up of ‘warmer’ —about –150 degrees Celsius — gas and dust, and within some of these areas new stars are being born. These newborn stars in turn warm up their surroundings, resulting in intense clumps of heated gas and dust within the galaxy.
These clumps show up brightly in this image, tracing the shape of the galaxy clearly — the SMC is made up of a central ‘bar’ of star formation, visible on the right hand side, and then a more extended ‘wing’, stretching out towards the left of the frame.
Overall, the Small Magellanic Cloud is about 1/20th of the size of the Milky Way. It can be seen shining in the night sky of the southern hemisphere, and its brightest regions are easily visible to the naked eye. It is a satellite galaxy of our own — it orbits around the Milky Way along with its bigger companion, the Large Magellanic Cloud. These two galaxies have been extensively studied because of their proximity to us; astronomers can observe them relatively easily to explore how star formation and galactic evolution works in galaxies other than our own.
The data in this image are from Herschel’s Spectral and Photometric Imaging Receiver (SPIRE), Photodetector Array Camera and Spectrometer (PACS), and Spitzer’s Multiband Imaging Photometer (MIPS).
This image was previously published by NASA/JPL.
Credit: ESA/NASA/JPL-Caltech/STScI
Astronomical images often look like works of art. This picture of one of our nearest neighbouring galaxies, the Small Magellanic Cloud, is certainly no exception!
The scene is actually a collaboration between two cosmic artists — ESA’s Herschel space observatory and NASA’s Spitzer space telescope. The image is reminiscent of an artistic stipple or pointillist painting, with lots of small, distinct dots coming together to create a striking larger-scale view.
The colours within this image provide information about the temperature of the dust mixed with the gas throughout the galaxy. The slight green tint stretching towards the left of the frame and the red hue of the main body of the galaxy are from the Herschel observations, which highlight cold material, down to a chilly –260 degrees Celsius .
The brighter patches of blue were captured by Spitzer. These regions are made up of ‘warmer’ —about –150 degrees Celsius — gas and dust, and within some of these areas new stars are being born. These newborn stars in turn warm up their surroundings, resulting in intense clumps of heated gas and dust within the galaxy.
These clumps show up brightly in this image, tracing the shape of the galaxy clearly — the SMC is made up of a central ‘bar’ of star formation, visible on the right hand side, and then a more extended ‘wing’, stretching out towards the left of the frame.
Overall, the Small Magellanic Cloud is about 1/20th of the size of the Milky Way. It can be seen shining in the night sky of the southern hemisphere, and its brightest regions are easily visible to the naked eye. It is a satellite galaxy of our own — it orbits around the Milky Way along with its bigger companion, the Large Magellanic Cloud. These two galaxies have been extensively studied because of their proximity to us; astronomers can observe them relatively easily to explore how star formation and galactic evolution works in galaxies other than our own.
The data in this image are from Herschel’s Spectral and Photometric Imaging Receiver (SPIRE), Photodetector Array Camera and Spectrometer (PACS), and Spitzer’s Multiband Imaging Photometer (MIPS).
This image was previously published by NASA/JPL.
Credit: ESA/NASA/JPL-Caltech/STScI
댓글 없음:
댓글 쓰기