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Астронет: Астрономическая картинка дня О происхождении золота http://www.variable-stars.ru/db/msg/1390678/eng |
Credit & Copyright: Dana
Berry,
NASA
Explanation:
Where did the
gold
in your jewelry originate?
No one is completely sure.
The relative average abundance in our
Solar System appears higher than can be made in the
early universe, in
stars, and even in typical
supernova explosions.
Some
astronomers
have suggested, and many believe, that neutron-rich heavy
elements such as
gold might be most easily
made in rare
neutron-rich
explosions such as the
collision of neutron stars.
Pictured here is an artist's illustration depicting two
neutron stars spiraling in toward each other, just before they
collide.
Since neutron star collisions are also suggested as the origin of
short
duration
gamma-ray bursts,
it is possible that you already own a souvenir from one of the most
powerful explosions in the universe.
Note:
The next APOD will debut during an NSF discovery announcement and press briefing
on Monday.
Authors & editors:
Robert Nemiroff
(MTU) &
Jerry Bonnell
(USRA)
NASA Web Site Statements, Warnings,
and Disclaimers
NASA Official: Jay Norris.
Specific
rights apply.
A service of:
LHEA at
NASA /
GSFC
& Michigan Tech. U.