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Solar storm of 1967 nearly took US to brink of war

10 August 2016 Astronomy Now

The solar storm of 23 May 1967 that jammed radar and radio communications at the height of the Cold War could have led to a disastrous military conflict if not for the U.S. Air Force’s budding efforts to monitor the Sun’s activity, a new study finds. The ensuing geomagnetic storm was so strong that the northern lights were visible as far south as New Mexico.

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Computer simulations shed light on Milky Way’s missing red giants

8 June 2016 Astronomy Now

New computer simulations from the Georgia Institute of Technology provide a conclusive test for a hypothesis of why the centre of the Milky Way appears to be filled with young stars but has very few old ones. According to the theory, the remnants of older, red giant stars are still there — they just aren’t bright enough to be detected with telescopes.

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NASA confirms evidence that liquid water flows on today’s Mars

28 September 2015 Astronomy Now

New findings from NASA’s Mars Reconnaissance Orbiter (MRO) provide the strongest evidence yet that liquid water flows intermittently on present-day Mars. Using an imaging spectrometer on MRO, researchers detected signatures of hydrated minerals on slopes where mysterious darkish streaks that appear to ebb and flow over time are seen on the Red Planet.