Scientists have identified what is possibly the coldest known white dwarf. In fact, this dim stellar corpse is so cold that its carbon has crystallized, effectively forming a diamond the size of Earth, astronomers say.

Scientists have identified what is possibly the coldest known white dwarf. In fact, this dim stellar corpse is so cold that its carbon has crystallized, effectively forming a diamond the size of Earth, astronomers say.

Larkin Carey, an optical engineer with Ball Aerospace, examines two test mirror segments designed for the James Webb Space Telescope. The mirror for the scope is extremely powerful, but heavy and pricey.

Larkin Carey, an optical engineer with Ball Aerospace, examines two test mirror segments designed for the James Webb Space Telescope. The mirror for the scope is extremely powerful, but heavy and pricey.

Coca-Cola's New Milk. Cows rotate in the milking parlor at Fair Oaks Farms, a large-scale dairy and tourist attraction, near Rensselaer, Ind.

Coca-Cola's New Milk. Cows rotate in the milking parlor at Fair Oaks Farms, a large-scale dairy and tourist attraction, near Rensselaer, Ind.

Pinterest • The world’s catalog of ideas
Search