Space

As the youthful universe congealed under the pull of gravity, matter knotted itself into galaxies, galaxy clusters and filaments, weaving […]

Opposing fountains of plasma and particles spanning 23 million light-years are the longest pair of black hole jets ever seen.

Black holes about the size of a hydrogen atom could be careening through the solar system unnoticed. But their days

Betelgeuse, Betelgeuse! The red supergiant that marks Orion’s left shoulder may have a tiny, unseen companion. Two independent studies found

For the first time, scientists have measured a long-sought global electric field in Earth’s atmosphere. This field, called the ambipolar

For the first time, astronomers have seen gas boiling and bubbling on the surface of a distant star. Scientists observed

At the age of 12, Tracy Slatyer felt sorry for a book. She read a newspaper article about how many

While SpaceX’s Starlink satellites are enabling Internet access and mobile communications around the globe, they are also posing a threat