Where does the solar system end and interstellar space begin? That's a question scientists have been working to answer using ...

Researchers are closer to unraveling a longstanding solar mystery surrounding the extreme thinness of the sun's tachocline ...

For obvious reasons, the Sun’s influence weakens as you get closer to the edge of the solar system. But things might be a lot ...

Have you ever looked into the stars in the night sky and asked yourself questions like “What else is out there?” The universe ...

Space looks empty until you try to cross it. Far beyond Pluto, where sunlight is faint and the planets are long behind, ...

Every few years, something slips through our cosmic neighborhood that doesn't belong here. It arrives from somewhere out past ...

The planet should not have survived the star's red giant phase—which sees a star balloon to more than 100 times its original ...

Credit: ESA & NASA/Solar Orbiter/EUI team; Data processing: E. Kraaikamp (ROB) As tempting as it is to cite one, no single number can describe the temperature of the whole Sun. Its layers are at ...

Approximately 4.5 billion years ago, a cold cloud of gas and dust buried deep in one of the Milky Way galaxy’s spiral arms started to collapse. From there, gravity worked its magic. The cloud began to ...

As the United States prepares to celebrate its 250th anniversary, the history of the solar system tells its own story of ...

A Jupiter-size exoplanet orbiting a dead star baffled astronomers. But the planet named WD 1856 b could preview the fate of ...