AC people and no-AC people. My family falls in the latter category, but we still want to keep our home comfortably cool - ...

It takes a white dwarf roughly 10 trillion years (nearly 730 times the current age of the universe, which is 13.7 billion years) to cool off enough that it no longer gives off visible light and ...

Cool Photo: A Black Spot, The Size Of Six Earths, Appears On The Sun. February 20, 2013 5:46 PM ET. Eyder Peralta Enlarge this image. The bottom two black spots on the sun, known as sunspots, ...

Our Sun will become a white dwarf in about 7 billion years. At that point, it will no longer produce energy through nuclear fusion, having exhausted its fuel (hydrogen and helium).

New observations reveal a never-before-seen disk of cool, interstellar gas wrapped around the supermassive black hole at the center of the Milky Way.

In 2020, Dr. Ruan and his team unveiled their creation: a type of white paint that can act as a reflector, bouncing 95 percent of the sun’s rays away from the Earth’s surface, up through the ...