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

NASA's New Horizons found the solar wind slows as it nears interstellar space, helping improve models of the solar system's ...

A Victoria University scientist who has found the key to dating the very beginnings of our Solar System will have his work published in the prestigious scientific journal Nature today. Dr Joel Baker, ...

PARIS, France — An interstellar comet that blazed past the Sun last year could be nearly three times older than our Solar System and is unlike anything ever before seen in our cosmic backyard, ...

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

In one of the most exciting developments in astronomy in the 21st century, NASA is launching the James Webb Space Telescope (JWST) today–and Northern Arizona University astronomers, planetary ...

The entire solar disk in unprecedented detail—this is shown by images of the visible surface of the sun, which researchers at the Max Planck Institute for Solar System Research have now created from ...

There may be another world lurking between the orbital lines of our solar system. Astronomers in Japan have published their theory of an “Earth-like planet,” dubbed Planet Nine, that’s hiding in plain ...

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 ...

Observations suggest comet spent billions of years on ‘vast unimaginable trajectories’ around our galaxy An interstellar comet that blazed past the sun last year could be nearly three times older than ...