Jul 7, 2020 12:45 AM
(This post was last modified: Jul 7, 2020 12:46 AM by C C.)
There’s a Black Hole With 34 Billion Times the Mass of the Sun, Eating Roughly a Star Every Day
https://www.universetoday.com/146842/the...every-day/
Astronomers have found the source of life in the universe
https://www.inverse.com/science/carbon-f...ite-dwarfs
EXCERPTS: The study, published Monday in the journal Nature Astronomy, suggests that white dwarf stars are the main source of carbon atoms in the Milky Way, a chemical element known to be crucial to all life. [...] When stars like our own Sun, a yellow dwarf star, run out of fuel, they turn into a white dwarf. In fact, 90 percent of all stars in the universe end up as white dwarf stars.
Over time, billions of years, these stars cool and eventually dim as they shed their outer material. However, right before they collapse, their remains are transported through space by winds that originate from their bodies. These stellar ashes contain chemical elements such as carbon. Carbon is the fourth most abundant chemical in the universe and is a key element in the formation of life as it is the basic building block to most cells.
[...] The team of scientists concluded that stars bigger than 2 solar masses also contributed to the galactic enrichment of carbon, while stars of less than 1.5 solar masses did not. “Now we know that the carbon came from stars with a birth mass of not less than roughly 1.5 solar masses,” Marigo said. The new study suggests that carbon was essentially trapped in the raw material that formed the Solar System 4.6 billion years ago... (MORE - details)
https://www.universetoday.com/146842/the...every-day/
Astronomers have found the source of life in the universe
https://www.inverse.com/science/carbon-f...ite-dwarfs
EXCERPTS: The study, published Monday in the journal Nature Astronomy, suggests that white dwarf stars are the main source of carbon atoms in the Milky Way, a chemical element known to be crucial to all life. [...] When stars like our own Sun, a yellow dwarf star, run out of fuel, they turn into a white dwarf. In fact, 90 percent of all stars in the universe end up as white dwarf stars.
Over time, billions of years, these stars cool and eventually dim as they shed their outer material. However, right before they collapse, their remains are transported through space by winds that originate from their bodies. These stellar ashes contain chemical elements such as carbon. Carbon is the fourth most abundant chemical in the universe and is a key element in the formation of life as it is the basic building block to most cells.
[...] The team of scientists concluded that stars bigger than 2 solar masses also contributed to the galactic enrichment of carbon, while stars of less than 1.5 solar masses did not. “Now we know that the carbon came from stars with a birth mass of not less than roughly 1.5 solar masses,” Marigo said. The new study suggests that carbon was essentially trapped in the raw material that formed the Solar System 4.6 billion years ago... (MORE - details)
