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SpaceTime 20160831 Series 19 Episode 59
Dark matter galaxy discovered
Astronomers have discovered a galaxy composed almost entirely of Dark Matter. The galaxy -- Dragonfly 44 – is about 70 thousand light years wide and has about the same mass as our own Milky Way galaxy -- but with far fewer stars – and with some 99.99 percent of its mass composed of dark matter.
New study of time symmetry
A new theory to explain why the universe is symmetrical – while time appears to be asymmetrical. The research examines a mysterious effect -- called 'T violation' -- a violation of time reversal symmetry -- which could be the origin of time evolution and conservation laws.
Mystery SETI Search for Extraterrestrial Intelligence signal detected
Astronomers are trying to determine the cause of a mysterious signal picked up by Russian scientists involved in the SETI Search for Extraterrestrial Intelligence. The signal was detected by scientists with the RATAN-600 observatory in Russia.
Juno soars over the Jovian cloud tops
NASA’s Juno spacecraft has successfully completed its closest approach to the swirling cream and tan cloud tops of the solar system’s largest planet Jupiter. Saturday morning’s flyby was the closest planned approach during the mission with the spacecraft flying just 4200 kilometres above the Jovian clouds at 208,000 kilometres per hour.
