Astronomers now estimate there is at least one planet for every star in our galaxy. These worlds, called exoplanets, are ...

Add Yahoo as a preferred source to see more of our stories on Google. This artist’s illustration provided by the European Southern Observatory shows an exoplanet orbiting around two brown dwarfs, ...

Nearly 4.5 million years ago, two enormous, blazing stars swung close to the solar system. They did not touch the sun, but they came close enough to leave a permanent mark on the thin mist of gas that ...

For centuries, astronomers have sought to understand the formation and evolution of the solar system and the dynamics that govern it. In particular, there is the long-standing question of whether or ...

Comet 3I/ATLAS, an object from another star that was found speeding through our solar system last summer, is now fading from ...

For eons, our solar system has been a relatively stable environment, with planets orbiting the Sun in predictable paths. However, the vastness of space means that occasionally, other stars come close ...

A new Tatooine-like planet outside the solar system may orbit two failed stars, scientists reported Wednesday. Subscribe to read this story ad-free Get unlimited access to ad-free articles and ...

Long before humans walked the Earth, your solar system had a brush with two blazing blue stars that passed surprisingly close by. Nearly 4.4 million years ago, they swept past at a distance of only ...

A new "Tatooine-like" planet outside the solar system may orbit two failed stars, scientists reported Wednesday.Related video above: The dark energy pushing our universe apart may not be what it seems ...