A massive rare fish thought to only live in temperate waters in the southern hemisphere has washed up on Oregon's northern coast, drawing crowds of curious onlookers intrigued by the unusual sight.

Dark matter is a hypothetical form of matter that is implied by gravitational effects that can't be explained by general relativity unless more matter is present in the universe than can be seen. It remains virtually as mysterious as it was nearly a century ago when first suggested by Dutch astronomer Jan Oort in 1932 to explain the so-called "missing mass" necessary for things like galaxies to clump together.

The accelerated expansion of the present universe, believed to be driven by a mysterious dark energy, is one of the greatest puzzles in our understanding of the cosmos. The standard model of cosmology called Lambda-CDM, explains this expansion as a cosmological constant in Einstein's field equations. However, the cosmological constant itself lacks a complete theoretical understanding, particularly regarding its very small positive value.

Transparent sea cucumbers, bowl-shaped sponges, and pink sea pigs are some of the fascinating animals discovered during a deep-sea expedition to the Pacific Ocean.

There's a hot new BEC in town that has nothing to do with bacon, egg, and cheese. You won't find it at your local bodega, but in the coldest place in New York: the lab of Columbia physicist Sebastian Will, whose experimental group specializes in pushing atoms and molecules to temperatures just fractions of a degree above absolute zero.

A new study from Tel Aviv University identified the earliest appearance worldwide of special stone tools, used 400,000 years ago to process fallow deer. The tools, called Quina scrapers (after the site in France where they were first discovered), were unearthed at the prehistoric sites of Jaljulia and Qesem Cave. They are characterized by a sharp working edge shaped as scales, enabling users to butcher their prey and also process its hides.

The swirl of milk and espresso—a small storm in your mug—doesn't impact the dynamics of the milk proteins, according to research published in ACS Food Science & Technology.

Vortices are a common physical phenomenon. You find them in the structure of galaxies, tornadoes and hurricanes, as well as in a cup of tea, or water as it drains from the bathtub.

Off the coasts of southern British Columbia, Washington, Oregon and northern California lies a 600 mile-long strip where the Pacific Ocean floor is slowly diving eastward under North America. This area, called the Cascadia Subduction Zone, hosts a megathrust fault, a place where tectonic plates move against each other in a highly dangerous way.

A study of the effects of mowing on a common weed has found that what doesn't kill you can make you stronger.