Astronomers are preparing for a rare cosmic event on January 22, when interstellar object 3I/ATLAS will align closely with Earth and the Sun, passing within just 0.69 degrees of the Sun-Earth axis.

Add Yahoo as a preferred source to see more of our stories on Google. Six planets will be visible during the February 28 planetary alignment. A six-planet “alignment” will be visible on Saturday, Feb.

Dive into 25 cosmic mysteries science can't explain, from dark matter to dark energy. Explore the universe's most baffling ...

For the first time, astronomers have directly measured a solar-system-size corona around a distant supermassive black hole, thanks to a rare cosmic alignment. When you purchase through links on our ...