Planetary systems such as our solar system take hundreds of millions of years to evolve. Since humanity has only existed for a sliver of that time, astronomers have only observed planetary systems at ...

NASA moved its grounded Artemis moon rocket from the launch pad back to its hangar on Wednesday for more repairs.

Step outside just after sunset and you may catch an unusual sight: six planets strung across the sky in a gentle arc. The ...

Safronova describes how quantum clocks work can act as new observatories for this invisible universe, searching for subtle drifts in their ticking that could signal dark matter, and testing gravity on ...