Cellular life would be impossible if strong bonds weren’t just so for some cellular functions, and if weak bonds weren’t just so for others.
New research suggests that the circumstellar habitable zone for terrestrial planets around stars is narrower than previously thought.
Today we celebrate the hundredth anniversary of the solar eclipse that, on May 29, 1919, physicist Arthur Eddington observed, seeking to test the General Theory of Relativity.
What happens down here depends a lot on what’s going on up there.
On August 21, we Americans got to see a total solar eclipse.