Today is a banner date for the human race: Albert Einstein presented his field equations for the general theory of relativity 100 years ago today.
A total solar eclipse will be cutting a swath through the heart of the nation less than two years from now, on August 21, 2017.
Today is when the New Horizons spacecraft makes its fly-by past Pluto. This is an unbelievable shot of Pluto with its largest moon Charon.
You know, Carl Sagan used to talk like this also; but at least back when he was dazzling us all with Cosmos, scientists “knew” a lot more than they do now.
A sample of Mars drilled from a rock by NASA’s Curiosity rover “shows ancient Mars could have supported living microbes.
Jupiter and its largest moons are unmistakable in this amazing photo by photographer Greg Diesel Walck.
List of Other Scientific Posts besides the main groups of scientific posts, like the Stephen Hawking Posts and the Claudia de Rham Posts.
However, there were a couple of elements earlier in the table where there were also no stable isotopes: technetium (#43) and promethium (#61).