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Kicking off the week!
#XMM-Newton takes us to the #CrabNebula in ultraviolet in our #ScienceImage of the week
#XMM-Newton takes us to the #CrabNebula in ultraviolet in our #ScienceImage of the week
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#NASA Observatories used to create detailed image of Crab Nebula #clarksville #space #science #crabnebula #nashville
Space Telescope Science Institute Baltimore, MD – Astronomers have produced a highly detailed image of the Crab Nebula, by combining data from telescopes spanning nearly the entire breadth of the electromagnetic spectrum, from radio waves seen by the Karl…
Space Telescope Science Institute Baltimore, MD – Astronomers have produced a highly detailed image of the Crab Nebula, by combining data from telescopes spanning nearly the entire breadth of the electromagnetic spectrum, from radio waves seen by the Karl…
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Multiwavelength Crab Nebula
Astronomers have produced a highly detailed image of the Crab Nebula, by combining data from telescopes spanning nearly the entire breadth of the electromagnetic spectrum, from radio waves seen by the Karl G. Jansky Very Large Array (VLA) to the powerful X-ray glow as seen by the orbiting Chandra X-ray Observatory. And, in between that range of wavelengths, the Hubble Space Telescope's crisp visible-light view, and the infrared perspective of the Spitzer Space Telescope.
The Crab Nebula, the result of a bright supernova explosion seen by Chinese and other astronomers in the year 1054, is 6,500 light-years from Earth. At its center is a super-dense neutron star, rotating once every 33 milliseconds, shooting out rotating lighthouse-like beams of radio waves and light — a pulsar (the bright dot at image center). The nebula's intricate shape is caused by a complex interplay of the pulsar, a fast-moving wind of particles coming from the pulsar, and material originally ejected by the supernova explosion and by the star itself before the explosion.
This image combines data from five different telescopes: the VLA (radio) in red; Spitzer Space Telescope (infrared) in yellow; Hubble Space Telescope (visible) in green; XMM-Newton (ultraviolet) in blue; and Chandra X-ray Observatory (X-ray) in purple.
#Electromagnetic #Spectrum#VeryLargeArray #VLA #ChandraObservatory#Hubble #SpaceTelescope#Spitzer #supernova #neutronstar #XMMNewton #ultraviolet #Xray #Multiwavelength #Crab #Nebula #CrabNebula
Astronomers have produced a highly detailed image of the Crab Nebula, by combining data from telescopes spanning nearly the entire breadth of the electromagnetic spectrum, from radio waves seen by the Karl G. Jansky Very Large Array (VLA) to the powerful X-ray glow as seen by the orbiting Chandra X-ray Observatory. And, in between that range of wavelengths, the Hubble Space Telescope's crisp visible-light view, and the infrared perspective of the Spitzer Space Telescope.
The Crab Nebula, the result of a bright supernova explosion seen by Chinese and other astronomers in the year 1054, is 6,500 light-years from Earth. At its center is a super-dense neutron star, rotating once every 33 milliseconds, shooting out rotating lighthouse-like beams of radio waves and light — a pulsar (the bright dot at image center). The nebula's intricate shape is caused by a complex interplay of the pulsar, a fast-moving wind of particles coming from the pulsar, and material originally ejected by the supernova explosion and by the star itself before the explosion.
This image combines data from five different telescopes: the VLA (radio) in red; Spitzer Space Telescope (infrared) in yellow; Hubble Space Telescope (visible) in green; XMM-Newton (ultraviolet) in blue; and Chandra X-ray Observatory (X-ray) in purple.
#Electromagnetic #Spectrum#VeryLargeArray #VLA #ChandraObservatory#Hubble #SpaceTelescope#Spitzer #supernova #neutronstar #XMMNewton #ultraviolet #Xray #Multiwavelength #Crab #Nebula #CrabNebula
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Nerdist "hearts" the Crab Nebula too!
Earlier in the week, +Katie Mack and I released a video called "Beating Heart of a Stellar Graveyard" that dug into the science behind one of the most beautiful and iconic images in astronomy.
We decided to make it after we were researching and formulating our live show on +Space Fan News! all about supernovae and wanted to really delve into the depths of beauty that can come in stellar death, explaining the physics behind it.
Huge thank you to +Nerdist and +Kyle Hill for reaching out to us to feature our work on one of my favorite sites on the net!
#CrabNebula #GIF #Space #Astronomy #ScienceEveryday #Nerdist
Earlier in the week, +Katie Mack and I released a video called "Beating Heart of a Stellar Graveyard" that dug into the science behind one of the most beautiful and iconic images in astronomy.
We decided to make it after we were researching and formulating our live show on +Space Fan News! all about supernovae and wanted to really delve into the depths of beauty that can come in stellar death, explaining the physics behind it.
Huge thank you to +Nerdist and +Kyle Hill for reaching out to us to feature our work on one of my favorite sites on the net!
#CrabNebula #GIF #Space #Astronomy #ScienceEveryday #Nerdist
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The Crab Nebula in #Taurus『eso9948f』
This photo shows a three colour composite of the well-known #CrabNebula (also known as Messier 1), as observed with the FORS2 instrument in imaging mode in the morning of November 10, 1999. It is the remnant of a supernova explosion at a distance of about 6,000 light-years, observed almost 1,000 years ago, in the year 1054. It contains a neutron star near its center that spins 30 times per second around its axis (see below).
In this picture, the green light is predominantly produced by hydrogen emission from material ejected by the star that exploded. The blue light is predominantly emitted by very high-energy ("relativistic") electrons that spiral in a large-scale magnetic field (so-called synchrotron emission). It is believed that these electrons are continuously accelerated and ejected by the rapidly spinning neutron star at the centre of the nebula and which is the remnant core of the exploded star. This pulsar has been identified with the lower/right of the two close stars near the geometric center of the nebula, immediately left of the small arc-like feature, best seen in ESO Press Photo eso9948. Technical information: ESO Press Photo eso9948 is based on a composite of three images taken through three different optical filters: B (429 nm; FWHM 88 nm; 5 min; here rendered as blue), R (657 nm; FWHM 150 nm; 1 min; green) and S II (673 nm; FWHM 6 nm; 5 min; red) during periods of 0.65 arcsec (R, S II) and 0.80 (B) seeing, respectively. The field shown measures 6.8 x 6.8 arcminutes and the images were recorded in frames of 2048 x 2048 pixels, each measuring 0.2 arcseconds. North is up; East is left.
L
Credit:
#ESO
Source:http://www.eso.org/public/images/eso9948f/
This photo shows a three colour composite of the well-known #CrabNebula (also known as Messier 1), as observed with the FORS2 instrument in imaging mode in the morning of November 10, 1999. It is the remnant of a supernova explosion at a distance of about 6,000 light-years, observed almost 1,000 years ago, in the year 1054. It contains a neutron star near its center that spins 30 times per second around its axis (see below).
In this picture, the green light is predominantly produced by hydrogen emission from material ejected by the star that exploded. The blue light is predominantly emitted by very high-energy ("relativistic") electrons that spiral in a large-scale magnetic field (so-called synchrotron emission). It is believed that these electrons are continuously accelerated and ejected by the rapidly spinning neutron star at the centre of the nebula and which is the remnant core of the exploded star. This pulsar has been identified with the lower/right of the two close stars near the geometric center of the nebula, immediately left of the small arc-like feature, best seen in ESO Press Photo eso9948. Technical information: ESO Press Photo eso9948 is based on a composite of three images taken through three different optical filters: B (429 nm; FWHM 88 nm; 5 min; here rendered as blue), R (657 nm; FWHM 150 nm; 1 min; green) and S II (673 nm; FWHM 6 nm; 5 min; red) during periods of 0.65 arcsec (R, S II) and 0.80 (B) seeing, respectively. The field shown measures 6.8 x 6.8 arcminutes and the images were recorded in frames of 2048 x 2048 pixels, each measuring 0.2 arcseconds. North is up; East is left.
L
Credit:
#ESO
Source:http://www.eso.org/public/images/eso9948f/
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110 Years Expansion Of Crab Nebula
I'm not very present here, these days, because I'm putting effort into some working projects.
However, I wish to share this breathtaking "110 Years Expansion Of Crab Nebula", taken by Peter Rosén on March 29, 2017 @ Centra Stockholm, Sweden.
Read some details that author gives us about his work:
"The Crab Nebula, or M1, is the expanding remains of a supernova that exploded in the year 1054.
I have assembled 5 images that span at least 110 years, possibly more. I have then adjusted the luminosity and contrast so that the images would match as closely as possible and I have used the Hubble image for the color component of all 5 images in the animation.
It is interesting to note the bright star up to the right that has moved by quite a distance. Its proper motion is about 0.25 arc seconds/year."
► Learn more about the previously mentioned 5 images>>
http://spaceweathergallery.com/indiv_upload.php?upload_id=134317
Further reading
► Look for the Crab Nebula>>
http://earthsky.org/clusters-nebulae-galaxies/crab-nebula-was-an-exploding-star
#Universe, #CrabNebula, #SupernovaRemnant, #M1, #Animation
I'm not very present here, these days, because I'm putting effort into some working projects.
However, I wish to share this breathtaking "110 Years Expansion Of Crab Nebula", taken by Peter Rosén on March 29, 2017 @ Centra Stockholm, Sweden.
Read some details that author gives us about his work:
"The Crab Nebula, or M1, is the expanding remains of a supernova that exploded in the year 1054.
I have assembled 5 images that span at least 110 years, possibly more. I have then adjusted the luminosity and contrast so that the images would match as closely as possible and I have used the Hubble image for the color component of all 5 images in the animation.
It is interesting to note the bright star up to the right that has moved by quite a distance. Its proper motion is about 0.25 arc seconds/year."
► Learn more about the previously mentioned 5 images>>
http://spaceweathergallery.com/indiv_upload.php?upload_id=134317
Further reading
► Look for the Crab Nebula>>
http://earthsky.org/clusters-nebulae-galaxies/crab-nebula-was-an-exploding-star
#Universe, #CrabNebula, #SupernovaRemnant, #M1, #Animation
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Another #Halloween themed space image treat features the #CrabNebula, taken by ESA/NASA +Hubble Space Telescope. In 1054 AD, during the Song dynasty, Chinese astronomers spotted a bright new star in the night sky. This newcomer turned out to be a violent explosion within the #MilkyWay, caused by the spectacular death of a star some 1600 light-years away. This explosion created one of the most well-studied and beautiful objects in the night sky — the Crab Nebula.
Read more: http://www.spacetelescope.org/images/potw1644a/
Credit: ESA/Hubble & NASA
Read more: http://www.spacetelescope.org/images/potw1644a/
Credit: ESA/Hubble & NASA
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Messier 1: Crab Nebula
Messier 1 (M1), also known as the Crab Nebula, Taurus A, or NGC 1952, is an expanding supernova remnant and pulsar wind nebula.
Messier 1 is located in the northern constellation Taurus, the Bull. It has an apparent magnitude of 8.4 and can be seen with binoculars in good viewing conditions.
The Crab Nebula is the only supernova remnant listed in Messier’s catalogue and the most famous object of its kind in the night sky. The nebula has a total luminosity 75,000 times that of the Sun and lies at a distance of 6,500 light years from Earth.
The Crab Nebula is the result of a supernova explosion, SN 1054, that was observed by Chinese astronomers in 1054 AD. It was the first deep sky object to be associated with a historical supernova explosion.
Messier 1 is about 11 light years (3.4 parsecs) in diameter and keeps expanding at a rate of about 1,500 kilometres per second. The supernova remnant contains the Crab Pulsar, a rapidly rotating neutron star that spins at a rate of 30.2 times per second. The pulsar, also catalogued as PSR 0531+21, is the youngest one observed. It emits radiation in optical, radio, ultraviolet, X-ray and gamma ray wavelengths.
As a radio source, M1 is catalogued as Taurus A and 3C 144. It was identified as a strong source of radio emission in 1949. X-ray emissions from the nebula were detected in April 1963 and the X-ray source was named Taurus X-1. M1 is the strongest persistent source of X-rays and gamma rays in the sky, with energies measuring above 30 kiloelectron volts (keV).
The Crab Nebula is part of the Perseus Arm of the Milky Way galaxy. Only three other supernovae have been seen in our galaxy since SN 1054.
The explosion of the progenitor star produced a large shell of filaments that has continued to expand ever since and will eventually disperse and disappear into the surrounding space.
The nebula’s filaments contain ionised gas which is responsible for the nebula’s glow. The electrons found in the gas move at speeds close to the speed of light, emitting synchotron radiation, which makes the nebula visible in radio wavelengths.
The filaments of the Crab Nebula are what is left of the progenitor star’s atmosphere and they mainly consist of ionised hydrogen and helium, along with other elements including oxygen, carbon, iron, nitrogen, sulfur and neon. The temperatures of the filaments are typically in the range from 11,000 to 18,000 K.
The Crab Nebula was discovered by the English astronomer John Bevis in 1731. Bevis added the object to his sky atlas Uranographia Britannica, which was completed in 1750 but never published.
Charles Messier discovered the nebula independently on August 28, 1758 while looking for a bright comet and entered it as the first object in his catalogue on September 12.
His entry read, “Nebula above the southern horn of Taurus, it doesn’t contain any star; it is a whitish light, elongated in the shape of a flame of a candle, discovered while observing the comet of 1758.”
Messier at first believed that the Crab Nebula was Halley’s Comet, which was predicted to return that year, but then noticed that the object was not moving.
The discovery gave him the idea to compile a catalogue of objects that observers could easily confuse with comets because of their cloudy appearance.
It was the French astronomer and mathematician Alexis Clairaut who had predicted the return of Halley’s Comet in late 1758, saying it would likely appear in Taurus constellation, which was why Messier was searching for it in this area of the sky.
In the first publication of his catalogue, Messier credited himself for the discovery. John Bevis was eventually acknowledged years later, after he had sent a letter to Messier in June 1771.
M1 was named the Crab Nebula after William Parsons, the 3rd Earl of Rosse, made a drawing of the object in 1844.
Lord Rosse observed the nebula at Birr Castle in Ireland using a 36-inch telescope. He called it the Crab Nebula because it bore a resemblance to a crab in his drawing.
Rosse could not confirm the resemblance after observing the object in a 72-inch telescope in 1848, but the name stuck to this day nevertheless.
The first photograph of M1 was taken by Dr. Isaac Roberts in December 1892 using a 20-inch telescope.
The Image:
Messier 1 – The Crab Nebula. This is a mosaic image, one of the largest ever taken by NASA’s Hubble Space Telescope of the Crab Nebula, a six-light-year-wide expanding remnant of a star’s supernova explosion. Japanese and Chinese astronomers recorded this violent event nearly 1,000 years ago in 1054, as did, almost certainly, Native Americans. The orange filaments are the tattered remains of the star and consist mostly of hydrogen. The rapidly spinning neutron star embedded in the center of the nebula is the dynamo powering the nebula’s eerie interior bluish glow. The blue light comes from electrons whirling at nearly the speed of light around magnetic field lines from the neutron star. The neutron star, like a lighthouse, ejects twin beams of radiation that appear to pulse 30 times a second due to the neutron star’s rotation. A neutron star is the crushed ultra-dense core of the exploded star.
Image: NASA, ESA, J. Hester and A. Loll (Arizona State University)
Text: Admin- Messier Objects
#CrabNebula #Messier1 #NASA #ESA
Messier 1 (M1), also known as the Crab Nebula, Taurus A, or NGC 1952, is an expanding supernova remnant and pulsar wind nebula.
Messier 1 is located in the northern constellation Taurus, the Bull. It has an apparent magnitude of 8.4 and can be seen with binoculars in good viewing conditions.
The Crab Nebula is the only supernova remnant listed in Messier’s catalogue and the most famous object of its kind in the night sky. The nebula has a total luminosity 75,000 times that of the Sun and lies at a distance of 6,500 light years from Earth.
The Crab Nebula is the result of a supernova explosion, SN 1054, that was observed by Chinese astronomers in 1054 AD. It was the first deep sky object to be associated with a historical supernova explosion.
Messier 1 is about 11 light years (3.4 parsecs) in diameter and keeps expanding at a rate of about 1,500 kilometres per second. The supernova remnant contains the Crab Pulsar, a rapidly rotating neutron star that spins at a rate of 30.2 times per second. The pulsar, also catalogued as PSR 0531+21, is the youngest one observed. It emits radiation in optical, radio, ultraviolet, X-ray and gamma ray wavelengths.
As a radio source, M1 is catalogued as Taurus A and 3C 144. It was identified as a strong source of radio emission in 1949. X-ray emissions from the nebula were detected in April 1963 and the X-ray source was named Taurus X-1. M1 is the strongest persistent source of X-rays and gamma rays in the sky, with energies measuring above 30 kiloelectron volts (keV).
The Crab Nebula is part of the Perseus Arm of the Milky Way galaxy. Only three other supernovae have been seen in our galaxy since SN 1054.
The explosion of the progenitor star produced a large shell of filaments that has continued to expand ever since and will eventually disperse and disappear into the surrounding space.
The nebula’s filaments contain ionised gas which is responsible for the nebula’s glow. The electrons found in the gas move at speeds close to the speed of light, emitting synchotron radiation, which makes the nebula visible in radio wavelengths.
The filaments of the Crab Nebula are what is left of the progenitor star’s atmosphere and they mainly consist of ionised hydrogen and helium, along with other elements including oxygen, carbon, iron, nitrogen, sulfur and neon. The temperatures of the filaments are typically in the range from 11,000 to 18,000 K.
The Crab Nebula was discovered by the English astronomer John Bevis in 1731. Bevis added the object to his sky atlas Uranographia Britannica, which was completed in 1750 but never published.
Charles Messier discovered the nebula independently on August 28, 1758 while looking for a bright comet and entered it as the first object in his catalogue on September 12.
His entry read, “Nebula above the southern horn of Taurus, it doesn’t contain any star; it is a whitish light, elongated in the shape of a flame of a candle, discovered while observing the comet of 1758.”
Messier at first believed that the Crab Nebula was Halley’s Comet, which was predicted to return that year, but then noticed that the object was not moving.
The discovery gave him the idea to compile a catalogue of objects that observers could easily confuse with comets because of their cloudy appearance.
It was the French astronomer and mathematician Alexis Clairaut who had predicted the return of Halley’s Comet in late 1758, saying it would likely appear in Taurus constellation, which was why Messier was searching for it in this area of the sky.
In the first publication of his catalogue, Messier credited himself for the discovery. John Bevis was eventually acknowledged years later, after he had sent a letter to Messier in June 1771.
M1 was named the Crab Nebula after William Parsons, the 3rd Earl of Rosse, made a drawing of the object in 1844.
Lord Rosse observed the nebula at Birr Castle in Ireland using a 36-inch telescope. He called it the Crab Nebula because it bore a resemblance to a crab in his drawing.
Rosse could not confirm the resemblance after observing the object in a 72-inch telescope in 1848, but the name stuck to this day nevertheless.
The first photograph of M1 was taken by Dr. Isaac Roberts in December 1892 using a 20-inch telescope.
The Image:
Messier 1 – The Crab Nebula. This is a mosaic image, one of the largest ever taken by NASA’s Hubble Space Telescope of the Crab Nebula, a six-light-year-wide expanding remnant of a star’s supernova explosion. Japanese and Chinese astronomers recorded this violent event nearly 1,000 years ago in 1054, as did, almost certainly, Native Americans. The orange filaments are the tattered remains of the star and consist mostly of hydrogen. The rapidly spinning neutron star embedded in the center of the nebula is the dynamo powering the nebula’s eerie interior bluish glow. The blue light comes from electrons whirling at nearly the speed of light around magnetic field lines from the neutron star. The neutron star, like a lighthouse, ejects twin beams of radiation that appear to pulse 30 times a second due to the neutron star’s rotation. A neutron star is the crushed ultra-dense core of the exploded star.
Image: NASA, ESA, J. Hester and A. Loll (Arizona State University)
Text: Admin- Messier Objects
#CrabNebula #Messier1 #NASA #ESA
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A colorful Crab Nebula (NGC 1952)
In this composite image made from data acquired by the Karl G. Jansky Very Large Array (VLA, radio data colored in red), NASA’s Spitzer Space Telescope (infrared, yellow), the NASA/ESA Hubble Space Telescope (optical wavelengths, green), ESA’s XMM-Newton telescope (ultraviolet radiation, blue) and NASA’s Chandra X-ray Observatory (X-ray, purple), you can see the Crab Nebula (Messier 1, NGC 1952) and the Crab Pulsar.
The young neutron star at its center is a remnant of the supernova SN 1054 (https://goo.gl/zPsvdM), which was observed on Earth in the year 1054. The nebula and pulsar are located in the constellation of Taurus (The Bull, https://goo.gl/9FLfn0), about 6,500 light-years away from Earth.
While only about 20 kilometers in diameter the Crab Pulsar is about 40 percent more massive than our Sun and its pulsar "beams" rotate once every 33 milliseconds, or 30 times each second. The strong radiation of the pulsar is driving the pulsar wind nebula (https://goo.gl/IATIk) surrounding it.
The Crab Nebula got its name from the Anglo-Irish astronomer William Parsons, 3rd Earl of Rosse (https://goo.gl/9U9KGN), who observed the object in 1840 and whose drawing of the nebula looked like a crab. (https://archive.org/stream/jstor-108366/108366#page/n5/mode/2up)
More information here:
https://www.spacetelescope.org/images/potw1720a/
https://en.wikipedia.org/wiki/Crab_Nebula
https://en.wikipedia.org/wiki/Crab_Pulsar
Take a look here for a video of the Crab Nebula in different wavelengths:
https://www.spacetelescope.org/videos/potw1720a/
It is a very fascinating and colorful image, showing the Crab Nebula over big parts of the electromagnetic spectrum. If you want to learn more about colors in astrophotography and why objects can look so different you should read this article I wrote for PhotographingSpace:
https://photographingspace.com/ap-color/
And if you want to learn more about the different kinds of nebulae you should read:
https://photographingspace.com/what-are-nebulae/
What is a pulsar (pulsating radio star)?
A pulsar is a type of neutron star, those are extremely dense and massive stars made up almost entirely of neutrons.They are the result of a gravitational collapse of a massive star following a supernova. Pulsars are highly magnetized and have short rotational periods. They are emitting beams of electromagnetic radiation which, when oriented in a way so a beam is facing Earth, can be detected. Because pulsars are rotating this beam rotates in an out of view resulting in a pulsating signal. More information here:
https://en.wikipedia.org/wiki/Pulsar
https://en.wikipedia.org/wiki/Neutron_star
https://en.wikipedia.org/wiki/Supernova#Core_collapse
More on supernova remnants:
https://en.wikipedia.org/wiki/Supernova_remnant
Image credit: Crab Nebula NASA, ESA, G. Dubner (IAFE, CONICET-University of Buenos Aires) et al.; A. Loll et al.; T. Temim et al.; F. Seward et al.; VLA/NRAO/AUI/NSF; Chandra/CXC; Spitzer/JPL-Caltech; XMM-Newton/ESA; and Hubble/STScI https://goo.gl/IOmR7A
Thank you for your interest in this Astronomy/Astrophysics collection. Maybe add me on Google+ (+Pierre Markuse) and Twitter (https://twitter.com/Pierre_Markuse) or have a look at the Space/Space Technology collection here: https://goo.gl/5KP0wx
#science #astronomy #crabnebula #supernovaremnant #pulsar #ngc1952 #space #hubble #hst #spitzer #chandra #vla #xmmnewton
Photo
In this composite image made from data acquired by the Karl G. Jansky Very Large Array (VLA, radio data colored in red), NASA’s Spitzer Space Telescope (infrared, yellow), the NASA/ESA Hubble Space Telescope (optical wavelengths, green), ESA’s XMM-Newton telescope (ultraviolet radiation, blue) and NASA’s Chandra X-ray Observatory (X-ray, purple), you can see the Crab Nebula (Messier 1, NGC 1952) and the Crab Pulsar.
The young neutron star at its center is a remnant of the supernova SN 1054 (https://goo.gl/zPsvdM), which was observed on Earth in the year 1054. The nebula and pulsar are located in the constellation of Taurus (The Bull, https://goo.gl/9FLfn0), about 6,500 light-years away from Earth.
While only about 20 kilometers in diameter the Crab Pulsar is about 40 percent more massive than our Sun and its pulsar "beams" rotate once every 33 milliseconds, or 30 times each second. The strong radiation of the pulsar is driving the pulsar wind nebula (https://goo.gl/IATIk) surrounding it.
The Crab Nebula got its name from the Anglo-Irish astronomer William Parsons, 3rd Earl of Rosse (https://goo.gl/9U9KGN), who observed the object in 1840 and whose drawing of the nebula looked like a crab. (https://archive.org/stream/jstor-108366/108366#page/n5/mode/2up)
More information here:
https://www.spacetelescope.org/images/potw1720a/
https://en.wikipedia.org/wiki/Crab_Nebula
https://en.wikipedia.org/wiki/Crab_Pulsar
Take a look here for a video of the Crab Nebula in different wavelengths:
https://www.spacetelescope.org/videos/potw1720a/
It is a very fascinating and colorful image, showing the Crab Nebula over big parts of the electromagnetic spectrum. If you want to learn more about colors in astrophotography and why objects can look so different you should read this article I wrote for PhotographingSpace:
https://photographingspace.com/ap-color/
And if you want to learn more about the different kinds of nebulae you should read:
https://photographingspace.com/what-are-nebulae/
What is a pulsar (pulsating radio star)?
A pulsar is a type of neutron star, those are extremely dense and massive stars made up almost entirely of neutrons.They are the result of a gravitational collapse of a massive star following a supernova. Pulsars are highly magnetized and have short rotational periods. They are emitting beams of electromagnetic radiation which, when oriented in a way so a beam is facing Earth, can be detected. Because pulsars are rotating this beam rotates in an out of view resulting in a pulsating signal. More information here:
https://en.wikipedia.org/wiki/Pulsar
https://en.wikipedia.org/wiki/Neutron_star
https://en.wikipedia.org/wiki/Supernova#Core_collapse
More on supernova remnants:
https://en.wikipedia.org/wiki/Supernova_remnant
Image credit: Crab Nebula NASA, ESA, G. Dubner (IAFE, CONICET-University of Buenos Aires) et al.; A. Loll et al.; T. Temim et al.; F. Seward et al.; VLA/NRAO/AUI/NSF; Chandra/CXC; Spitzer/JPL-Caltech; XMM-Newton/ESA; and Hubble/STScI https://goo.gl/IOmR7A
Thank you for your interest in this Astronomy/Astrophysics collection. Maybe add me on Google+ (+Pierre Markuse) and Twitter (https://twitter.com/Pierre_Markuse) or have a look at the Space/Space Technology collection here: https://goo.gl/5KP0wx
#science #astronomy #crabnebula #supernovaremnant #pulsar #ngc1952 #space #hubble #hst #spitzer #chandra #vla #xmmnewton
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