This was
your sky.
On the Origin of Gold
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, or in typical supernova explosions. Some astronomers suggest that neutron-rich heavy elements like gold might be most easily made in rare neutron-rich explosions. The collision of neutron stars is one such event, depicted in this artist's illustration.
Museum grade paper, printed and shipped from the facility nearest you. The card stays free, the print is the thing you keep.
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In tropical astrology, 11 SEP 2011 falls under Virgo (♍). The sign's window runs from 08-23 through 09-22. Virgo is the largest zodiac constellation, holding the heart of the Virgo galaxy cluster. The Sun was crossing this region of the sky on 11 SEP 2011.