A proposed merger between Elon Musk's SpaceX and xAI, reported exclusively by Reuters on Thursday, could give fresh momentum to Musk's plan to launch ...

New simulations suggest Jupiter holds far more water than once thought, reshaping ideas about how the largest planet formed.

The atmospheric carbon dioxide was thought to be the result of the oxidation of oxygen molecules in the exosphere. As a ...

Planet Nine was proposed to explain unusual motions of distant objects beyond Neptune. Since then, astronomers have searched ...

The discovery of a meteorite older than Earth in the UK is a chance to learn about the early solar system. The rock seems to have come from the protoplanetary disk that birthed the planets. The young ...

Ariana Church made the extraordinary find with her seven-year-old sister, Leyla, mother Hayley, 39, and grandmother Marion, ...

The project has recently been submitted to the European Space Agency for consideration as a future mission. The current mission design proposes a launch in the 2030s, returning at least 400 minutes of ...

NPR's Ailsa Chang speaks to astronomer Sarah Greenstreet about her team's new discovery of the fastest-spinning large asteroid known to man.

Skygazers who look up at the moon tonight may be able to spot Saturn below it. Here's when and how to spot the conjunction.

SAN JUAN, Puerto Rico (AP) — The administration of U.S. President Donald Trump has canceled solar projects in Puerto Rico worth millions of dollars, as the island struggles with chronic power outages ...

Astronomers have identified a rare sednoid called Ammonite, an icy object beyond Neptune that offers new insight into the ...

The planet is experiencing the most powerful solar event since 2003—and it's bringing spectacular Northern Lights.