An illustration of the hot Jupiter HD 189733 b don't be fooled by its placid marble like appearance . | Credit: NASA/ Robert Lea (Created with Canva) Using the James Webb Space Telescope (JWST), ...

WASHINGTON (Reuters) - Jupiter, the solar system's largest planet, may have been smacked head-on by an embryonic planet 10 times Earth's mass not long after being formed, a monumental crash with ...

Jupiter is about to dominate the night sky, lining up with Earth and the Sun in a way that makes the giant planet appear ...

Jupiter makes its closest approach on January 9, just 393 million miles away, shortly before reaching its opposition on January 10.

Planetary scientists have long wondered why Mars is only about half the size and one-tenth the mass of Earth. As next-door neighbors in the inner solar system, probably formed about the same time, why ...

Gravitational microlensing is the only method capable of exploring the entire population of free-floating planets down to Mars-mass objects, because the microlensing signal does not depend on the ...

A newly discovered exoplanet more than 1,200 light-years from Earth has three times the mass of Jupiter and is the new "king" of its solar system. Known as Kepler-88 d, it replaces Kepler-88 c as the ...

In our solar system, Jupiter is the largest planet by far. Jupiter has twice the mass of Saturn and 300 times the mass of the Earth. As big as Jupiter is, scientists have now discovered a distant ...