This was
your sky.
Cyg X-1: Can Black Holes Form in the Dark?
Black holes are thought to form from the collapse of a massive star, usually heralded by a supernova explosion. This process is also a leading explanation for gamma-ray bursts. However, researchers suggest that Cygnus X-1, the Milky Way's most famous black hole, formed when a massive star collapsed without a supernova. Their dynamic evidence is summarized in this image of the region.
Museum grade paper, printed and shipped from the facility nearest you. The card stays free, the print is the thing you keep.
See print sizesFrom $29.00
In tropical astrology, 12 JUN 2003 falls under Gemini (♊). The sign's window runs from 05-21 through 06-20. Gemini is named for the twin stars Castor and Pollux, both bright enough to spot without a telescope. The Sun was crossing this region of the sky on 12 JUN 2003.