Add Yahoo as a preferred source to see more of our stories on Google. The European Space Agency's ExoMars Trace Gas Orbiter image of interstellar comet 3I/ATLAS as it passed close to Mars. (The ...

This summer, scientists spotted an incredibly rare visitor to Earth’s solar system—a comet, now known as 3I/ATLAS, that entered our solar system from the galaxy beyond and is zipping past the sun at a ...

The sun continuously blasts charged, magnetic field-carrying particles, or plasma, in all directions. This solar wind ...

The Mars Atmosphere and Volatile EvolutioN mission, better known as MAVEN, has slipped into an unnerving silence just as it finished a rare close look at an interstellar visitor sweeping through the ...

A mysterious interstellar comet — just the third such object ever confirmed to have entered our solar system — streaked past Mars last week. A spacecraft in orbit around the red planet had a front-row ...