The key to this test is understanding that there do seem to be universal constants that make intelligent life—or, at least, the chance at intelligent life—possible. For example, incredibly ...

Only a small range of possible values for the universal constants (such as the mass of an electron) are consistent with the presence of life as we know it. The significance of such apparent fine ...

By comparing it to observations of the very early universe and supernovae, they have been able to suggest that dark energy—the mysterious force propelling our universe's expansion—is not constant ...

If dark energy is evolving over time, its impact on cosmology would be profound. It would mean that Einstein’s cosmological constant, long assumed to be a universal constant, would need to be modified ...