At an estimated velocity of 250,000 kilometers per hour, interstellar Comet 3I/ATLAS lacked the luxury of long, recurring ...

The European Space Agency's ExoMars Trace Gas Orbiter image of interstellar comet 3I/ATLAS as it passed close to Mars. (The European Space Agency) A mysterious interstellar comet — just the third such ...

The engineering lesson is simple: Sometimes the best observatory is the one already parked at another planet. When an interstellar comet was in a viewing geometry that kept Earth-based telescopes too ...

Researchers uncover how Mars affects Earth’s orbit, offering new insight into the planetary forces behind ice ages.

The spacecraft landed in 2019 to study the deep interior of the planet. NASA is being forced to end its Mars lander mission early because of dust. Officials announced Tuesday the InSight spacecraft is ...

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 earth (and humanity) would be very different without our smaller red neighbor. In A Nutshell Computer simulations show that without Mars, a key 2.4-million-year climate cycle that helps pace Earth ...

Olympus Mons is a giant volcano on Mars. It is the tallest mountain in space. It is almost three times higher than Mount ...

Do you know which planet has a waterfall four times taller than Angel Falls? Discover the largest waterfall in the Solar ...

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 ...