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Fraser
2017-May-15, 04:30 PM
A new paper on supernovae and the effects on Earth increases the so-called "Supernova Kill-Zone" to 50 light years.
The post New Estimate Puts the Supernova Killzone Within 50 Light-Years of Earth (https://www.universetoday.com/135534/new-estimate-puts-the-supernova-killzone-within-50-light-years-of-earth/) appeared first on Universe Today (https://www.universetoday.com).


More... (https://www.universetoday.com/135534/new-estimate-puts-the-supernova-killzone-within-50-light-years-of-earth/)

Ross 54
2017-May-16, 02:24 PM
Not too difficult to see how the relatively nearby supernova of 2.6 million years ago might have played a part in hominid evolution. If Africa became more arid grassland than forest as a result of the climatic effects, that would have encouraged the development of species that could move about more easily on the ground. Tree-based environments would have been largely eliminated. Upright walking could have been an adaptation to the need to range more widely to find water and food, in a relatively sparse environment

TheC
2017-Jun-03, 11:48 PM
Let's say a very near-Earth supernova goes off tonight and will hit Earth in 10 years, completely destroying it. What would be our best shot at sending a large enough group of people to a distant planet, if NASA had a military budget and only 10 years to launch its mission? What kind of space ship would we use? What solar system would be our target destination?

slang
2017-Jun-04, 09:13 AM
Let's say a very near-Earth supernova goes off tonight and will hit Earth in 10 years, completely destroying it. What would be our best shot at sending a large enough group of people to a distant planet, if NASA had a military budget and only 10 years to launch its mission? What kind of space ship would we use? What solar system would be our target destination?

Duplicate question, please post any replies in the Q&A thread (https://forum.cosmoquest.org/showthread.php?165477-Thought-Experiment-for-Deep-Space-Travel) where more folks will see it.