A compound lens forged by two galaxies is helping astronomers get a bead on the Hubble Constant and dark energy.

The accelerating expansion of the Universe has puzzled scientists since its discovery in 1998. This phenomenon, one of the ...

A team of astronomers has identified a double gravitational lens system with an extraordinary “zig-zag” light path, rewriting ...

What can do that?Einstein’s cosmological constant pushes things apart. We employ a different value.A different number than Einstein would have thought. But the idea is exactly what Einstein came ...

Einstein later recalled thinking. He came to realize that since all the laws of physics remain the same whether you’re at rest or in steady motion, the speed of light has to be constant as well.

According to their study published on arXiv, a team of international astronomers has made a groundbreaking discovery of an ...

That's about 186,282 miles per second — a universal constant known in equations as "c," or light speed. According to physicist Albert Einstein's theory of special relativity, on which much of ...

The actual connection between physics and molecular biology is that curvature and torsion are the most probable solutions ...

But in order to get the math right, Einstein had to create a new constant number (an unchanging value, like 'pi' or 'e') and stick it inside his general relativity equations to balance them.

Einstein realized that the speed of light—about 186,000 miles per second—is constant whether it comes from a moving source such as a speeding car's headlights or an unmoving source such as a ...

Einstein later recalled thinking. He came to realize that since all the laws of physics remain the same whether you're at rest or in steady motion, the speed of light has to be constant as well.