Stars get warmer as they age, which means there was a time when our Sun was too cool to liquify water on Earth. But the evidence is clear water existed on Earth for much longer. What gives?
Beyond The Cold
Nothing can be colder than absolute zero, or can it? Arthur Eddington wrestles with the paradox of stellar thermodynamics.
The Infinity Paradox
In an infinite and ageless cosmos, how is it possible that the Universe is cold, dark and dominated by gravity?
Riddle Me This
What happens when one set of evidence contradicts another set of evidence?
Behold The Grism
A grism lets astronomers study the colors of starlight.
An Artist’s Eye
The combination of science and art can create wonders.
Ten Amazing Things Astrophysics Says About You
Astrophysics has some pretty amazing things to say about you.
See And Be Seen
Perhaps we should focus our SETI efforts on stars that could see Earth transit the Sun. It’s an interesting idea that’s worth considering.
Give Or Take A Day
It’s leap day, which means lovers of February get to enjoy it just a little bit longer.