Reference Explore the eight (or nine) planets of the solar system in order from nearest to the sun and discover the many wonders of our solar system along the way. An object seen to have moved in the ...

Astronomers used the James Webb Space Telescope for the largest and deepest sample of galaxy groups, some of which were up to ...

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

The solar system ... this exceptional galaxy. "When and how galaxy disks form has been an outstanding puzzle," he says. "Seeing a massive, well-ordered disk galaxy when the universe was just ...

The find shines light on how galaxies begin to turn gas and dust "into stars and planets," said astrophysicist Blakesley ...

The birthplace of stars begins within large, cold clouds of gas and dust, which eventually collapse under the weight of ...

The NASA New Horizons spacecraft's extensive observations of Lyman-alpha emissions have resulted in the first-ever map from the galaxy at this important ultraviolet wavelength, providing a new look at ...