The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

Opinions expressed by Forbes Contributors are their own. Jamie Carter is an award-winning reporter who covers the night sky. Computer simulations suggest that there is an undiscovered Earth-like ...

Using clever light-detecting techniques, ExTrA searches red dwarf stars for planets that might support life. By studying tiny ...

Red dwarfs are plentiful, and research shows that they host multitudes of planets ... on Earth and perhaps on other worlds." More information: Afonso Mota et al, How habitable are M-dwarf Exoplanets?

The largest object is the asteroid belt is the dwarf planet Ceres ... other stars in the sky because it is much closer to Earth. But compared to other stars it is only of average size.

An impression of how TOI-715b could look, orbiting around its red dwarf star. Credit: NASA/JPL-Caltech The search for Earth-like planets is inherently a key part of the search for other life in ...

Charon is unusual because it is the largest moon in the solar system compared with ... a double dwarf planet system, not a planet and moon. Charon is smaller than Earth's moon.

The organic material found in a few areas on the surface of dwarf planet Ceres is probably of exogenic origin. Impacting ...