The head of planetary defense at the European Space Agency discusses 2024 YR4, an asteroid with a small chance of striking ...

The Sun sets differently on Mars. Part of that is due to its distance from the star (an average of 142 million miles versus ...

NASA's Perseverance rover has been busy gathering bits of Mars — rock cores the size of chalk sticks, clusters of broken fragments no bigger than pencil erasers, and even grains of dust fine enough to ...

Among the roughly 10 billion white dwarf stars in the Milky Way galaxy, a greater number than previously expected ...

Among the roughly 10 billion white dwarf stars in the Milky Way galaxy, a greater number than previously expected could ...

NASA’s Curiosity rover has captured breathtaking images of iridescent clouds drifting across the Martian sky, revealing a ...

These popular astronomy questions, answered by Astronomy magazine, will help you better understand our universe - and share ...

"I'll always remember the first time I saw those iridescent clouds and was sure at first it was some color artifact." ...

Scientists have long thought that the South Pole-Aitken basin was formed by a shallow-angle impact, but new research suggests ...

New images captured by NASA's Curiosity rover show colorful clouds in the sky over Mars. The images were captured by the ...

New research at NAU looks at faster warming in the Arctic, and highlights concern about risks to the U.S. of a political ...