Supernova discovered in Cartwheel galaxy
Click for full image.
Cool image time! In reviewing a December 2021 image of the Cartwheel Galaxy taken by the New Technology Telescope in Chile, astronomers noticed something that was not there in earlier images, a new supernovae.
The photo above, reduced to post here, compares a 2014 image, taken by the Very Large Telescope, with the 2021 photo. In the lower left of the new image is a bright object not in the previous photo.
This event, called SN2021afdx, is a type II supernova, which occurs when a massive star reaches the end of its evolution. Supernovae can cause a star to shine brighter than its entire host galaxy and can be visible to observers for months, or even years — a blink of an eye on astronomical timescales. Supernovae are one of the reasons astronomers say we are all made of stardust: they sprinkle the surrounding space with heavy elements forged by the progenitor star, which may end up being part of later generations of stars, the planets around them and life that may exist in those planets.
Cartwheel is about 500 million light years away, and because of its bright outer ring is one one of the more unusual nearby galaxies.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
Click for full image.
Cool image time! In reviewing a December 2021 image of the Cartwheel Galaxy taken by the New Technology Telescope in Chile, astronomers noticed something that was not there in earlier images, a new supernovae.
The photo above, reduced to post here, compares a 2014 image, taken by the Very Large Telescope, with the 2021 photo. In the lower left of the new image is a bright object not in the previous photo.
This event, called SN2021afdx, is a type II supernova, which occurs when a massive star reaches the end of its evolution. Supernovae can cause a star to shine brighter than its entire host galaxy and can be visible to observers for months, or even years — a blink of an eye on astronomical timescales. Supernovae are one of the reasons astronomers say we are all made of stardust: they sprinkle the surrounding space with heavy elements forged by the progenitor star, which may end up being part of later generations of stars, the planets around them and life that may exist in those planets.
Cartwheel is about 500 million light years away, and because of its bright outer ring is one one of the more unusual nearby galaxies.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
Thanks !
Nice IMAGE i
On initial inspection, it appears the outer stars are moving away from the core; because the core is too gravitationally weak? Where is the Dark Matter? Or maybe the core does not have a strong central Black Hole.
And somewhere out there is the Jupiter 2 still trying to reach Alpha Centari
Which image is which? I’m assuming the left image is the latter as it shows sharper details. In that image, I see a yellowish bloom, but I’m not sure. However, as western, non-Jewish people (among whom I am not so blessed by G-d to number myself) read chronologically from left to right, I hesitate to assume the left image is the newer image.
Sarge,
The left picture is the older one from 2014, it’s similar to one taken in 2016 by Hubble.
https://science.nasa.gov/download/file/fid/14223
The cartwheel galaxy is a novelty because it’s so unusual, and it’s a favorite for astronomers to try out their new toys on… Even though the picture taken from Chile recently in 2021 is slightly blurry, it is very clear under the circumstances, of using new optical techniques and technology while looking through “our atmosphere” which always blurs.
You can see a new bright object in the lower left as Zimmerman points out in the article.
At first I thought it could be a new object in our own galaxy but I find it unlikely. The stars in our galaxy are very bright and obvious.
Normally a supernova puts out an abundance of neutron radiation which if they look back through their underground detectors data, they might find they captured an anomaly on the date when it occurred.