February 27, 2017 Credit: NASA, ESA and R. Kirshner (Harvard-Smithsonian Center for Astrophysics and Gordon and Betty Moore Foundation) and P. Challis (Harvard-Smithsonian Center for Astrophysics) <\/p>\n
Thirty years ago, on 23 February 1987, the light from a stellar explosion marking the death of a massive star arrived at Earth to shine in Southern Hemisphere skies. <\/p>\n
Located in the Large Magellanic Cloud, a satellite galaxy of the Milky Way, SN 1987A was the closest observed supernova to Earth since the invention of the telescope. Studying it for the last 30 years has revolutionised our understanding of the explosive death of massive stars. <\/p>\n
In operation since 1990, the NASA\/ESA Hubble Space Telescope has observed the supernova remnant many times, as highlighted in this montage. The images show its evolution between 1994 and 2016, and highlight the main ring that blazes around the exploded star. <\/p>\n
A new wide-field image was also taken by Hubble in January 2017 to mark the 30 year anniversary. <\/p>\n
By observing the expanding remnant material over the years, Hubble has helped to show that the material within the ring was likely ejected 20 000 years before the actual explosion took place. <\/p>\n
The initial burst of light from the supernova initially illuminated the rings. They slowly faded over the first decade after the explosion, until a fast-moving shell of gas ejected during the supernova slammed into the central ring, sending a powerful shockwave through the gas, heating it to searing temperatures and generating strong X-ray emission. <\/p>\n
This caused clumps of denser gas within the ring to light up like a string of pearls, seen as the increasing number of bright spots, which are now fading again. <\/p>\n
As the shock wave continues to move through the shells ejected by the dying star in its final throes of life, who knows what new details will be revealed? <\/p>\n
Explore further: The dawn of a new era for Supernova 1987a (Update) <\/p>\n
Three decades ago, astronomers spotted one of the brightest exploding stars in more than 400 years. The titanic supernova, called Supernova 1987A (SN 1987A), blazed with the power of 100 million suns for several months following ... <\/p>\n
(PhysOrg.com) -- Using the Hubble Space Telescope, astronomers are witnessing the unprecedented transition of a supernova to a supernova remnant, where light from an exploding star in a neighboring galaxy, the Large Magellanic ... <\/p>\n
(PhysOrg.com) -- In 1987, light from an exploding star in a neighboring galaxy, the Large Magellanic Cloud, reached Earth. Named Supernova 1987A, it was the closest supernova explosion witnessed in almost 400 years, allowing ... <\/p>\n
This NASA\/ESA Hubble Space Telescope image captures the remnants of a long-dead star. These rippling wisps of ionized gas, named DEM L316A, are located some 160,000 light-years away within one of the Milky Way's closest galactic ... <\/p>\n
(PhysOrg.com) -- The delicate shell, photographed by the NASA\/ESA Hubble Space Telescope, appears to float serenely in the depths of space, but this apparent calm hides an inner turmoil. The gaseous envelope formed as the ... <\/p>\n
Twenty years ago, astronomers witnessed one of the brightest stellar explosions in more than 400 years. The titanic supernova, called SN 1987A, blazed with the power of 100 million suns for several months following its discovery ... <\/p>\n
Planets are thought to form in the disks of dust and gas found around young stars. But astronomers have struggled to assemble a complete theory of their origin that explains how the initial dust develops into planetary systems. ... <\/p>\n
Evidence of planetary debris surrounding a double sun, 'Tatooine-like' system has been found for the first time by a UCL-led team of researchers. <\/p>\n
When the universe was young, a supermassive black holebloated to the bursting point with stupendous powerheaved out a jet of particle-infused energy that raced through the vastness of space at nearly the speed of light. <\/p>\n
(Phys.org)A team of astronomers led by Favio Faifer of the National University of La Plata, Argentina, has discovered the first ultra-compact dwarf (UCD) galaxy in an X-ray bright galaxy group designated NGC 5044. The ... <\/p>\n
Hunting for habitable exoplanets now may be easier: Cornell University astronomers report that hydrogen pouring from volcanic sources on planets throughout the universe could improve the chances of locating life in the cosmos. <\/p>\n
Astronomers based at the University of Sheffield have found evidence that stars are ripped apart by supermassive black holes 100 times more often than previously thought. <\/p>\n
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Image: The evolution of supernova 1987A - Phys.org - Phys.Org<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" February 27, 2017 Credit: NASA, ESA and R. Kirshner (Harvard-Smithsonian Center for Astrophysics and Gordon and Betty Moore Foundation) and P Continue reading