According to Dean Duffy, the new NASA administrator, a rock sample collected by the Perseverance rover was the "clearest sign ...

Interstellar objects like comet 3I/ATLAS, unbound to our sun, regularly visit our solar system. These objects are considered the most common macroscopic entities in the Milky Way.

While Saturn has been visible in the night sky all of September, this weekend, the ringed planet will shine its brightest.

The idea was that high-powered lasers would propel tiny probes to 20 percent of the speed of light, impelling them with ...