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Apr 14, 2016 12:32 PM ET // Elizabeth Howell
Was there a so-called 'super-Earth' planet that formed inside the orbit of Mercury? If so, it might have been eaten by our sun.
Apr 6, 2016 01:00 PM ET // Irene Klotz
Scientists have discovered radioactive debris from relatively nearby stars that exploded a few million years ago, raising questions about whether cosmic rays released by the supernovae impacted Earth’s past climate.
Mar 28, 2016 01:27 PM ET // Ian O'Neill
Comet P/2016 BA14 was initially thought to be a cosmic lightweight, but as it flew past Earth on March 22, NASA pinged it with radar to reveal just what a heavyweight it really is.
Mar 22, 2016 01:26 PM ET // Elizabeth Howell
It's notoriously hard to figure out where auroras occur at any given time -- now scientists have turned to the public for help.
Mar 16, 2016 08:37 PM ET // Ian O'Neill
Astronomers have studied a violent young sun-like star, revealing that life on Earth is lucky to have such a strong global magnetic field.
Mar 10, 2016 05:54 PM ET // Ian O'Neill
What looks like an unsightly bruise in an otherwise serene view of our blue Earth is actually the effect of a rather special astronomical event that occurred on March 9.
Mar 1, 2016 08:22 PM ET // Ian O'Neill
To receive a message from an intelligent alien civilization, we have to be looking in the right place at the right time; how can we maximize our chances?
Feb 29, 2016 02:38 PM ET // Elizabeth Howell
Satellites can short-out if they encounter a surge of radiation in Earth orbit and a new study of the Van Allen belts' shape could help better protect them from this highly-charged environment.
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