Looking at a distant galaxy means looking back in time.

The energetic streams are together 23 million light-years in length—roughly as long as 140 Milky Way galaxies lined end to end ...

MIT scientists say that dark energy could be the missing factor that explains some of the most perplexing phenomena in the ...

The discovery of something this immense surprisingly early in the lifetime of the universe overturns what we thought we knew ...

Cosmological data suggest unexpected masses for neutrinos, including the possibility of zero or negative mass.

Oklahoma City is now home to the highest-caliber planetarium in the United States, according to the Science Museum Oklahoma.

Lightsaber color meanings reflect a Jedi or Sith's path, from blue for courage to red for power. Discover the significance ...

New infrared image highlights star formation triggered by merger-in-progress. Arp 107, a pair of interacting galaxies, shines ...

Scientists have discovered the largest known black hole jet, named Porphyrion, stretching 23 million light years across. This colossal jet raises intriguing questions about its perfectly straight ...

Astronomers found the biggest pair of black hole jets ever observed, stretching 23 million light years. and named this system ...

In any globular cluster, all its stars formed at the same time, from the same cloud of gas. The Milky Way has around 150 ...

Nearly imperceptible quantum flickers used to limit how precisely we could detect the way space-time ripples, but squeezing ...