A rare double Einstein ring (SDSSJ0946+1006). Either two distant galaxies are lined up directly behind a closer massive galactic cluster (which is gravitationally-lensing their light into a double ring) – or of course it could be a donut-shaped portal to an alternate universe. You decide. Credit: NASA/ESA HST.
So finally you possess that most valuable of commodities, a traversable wormhole – and somehow or other you grab one end of it and accelerate it to a very rapid velocity. (…) Read the rest of Astronomy Without A Telescope – Knots In Space (699 words)
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(C) Steve Nerlich for Universe Today, 2011. | Permalink | No comment | Add to del.icio.us Post
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