T he first time I heard about galaxies without dark matter, I was sitting in my very first graduate class at the University ...

This frames the plot of “The Evitable Conflict,” a short story from “I, Robot,” Isaac Asimov’s seminal collection published ...

The Small Magellanic Cloud (SMC) is one of the Milky Way's closest galactic neighbors—a small, gas-rich galaxy visible to the ...

The planet, named L 98-59 d, is covered with magma and ​enveloped by a noxious and fiercely hot, sulfur-rich atmosphere.

The molten planet, with an atmosphere rich in sulfur-bearing gases, is unlike anything astronomers have ever smelled.

A telescope in Chile has revealed the swirling splendor of star-forming gases at the heart of our Milky Way galaxy ...

Discovered in the Pictor II dwarf galaxy, star PicII-503 has an extreme deficiency in iron—less than 1/40,000th of the sun.

NASA’s Curiosity rover uncovered a remarkable surprise on Mars that could reshape our understanding of the planet’s ...