NASA said the comet will make its closest approach to the sun in late October, scooting between the orbits of Mars and Earth—but closer to the red planet than us at a safe 150 million miles (240 ...

Comet Neowise soars in the horizon of the early morning sky in this view from the near the grand view lookout at the Colorado National Monument west of Grand Junction, Colo., Thursday, July 9, 2020.

Comet Neowise soars in the horizon of the early morning sky in this view from the near the grand view lookout at the Colorado National Monument west of Grand Junction, Colo., Thursday, July 9, 2020.

The comet Tsuchinshan-ATLAS as it looked in the western sky from Papillion Sunday night. Astronomers say the best is yet to come. For the next few days, the comet should be more visible.

Solar systems mostly keep to themselves. What’s ours is ours and what’s not is not. Stars are simply too far from each ...

A mysterious visitor from another solar system could be an alien spacecraft, according to a leading Harvard astronomer.

NASA astronaut Nichole “Vapor" Ayers captured a stunning photo of a Transient Luminous Event e bolt above a thunderstorm over ...