I/ATLAS might be over 7 billion years old, a new study reports, which would make it the oldest comet known. But experts caution we need more data.

Imagine waking up one morning to the news: a black hole is drifting close to our solar system. It sounds like the plot of a .

For only the third time in recorded history, an interstellar object has crossed into our solar system, creating quite the ...

NASA has shared a video and photo of solar winds flowing through the Sun's corona from an extremely close distance. Coronal Mass Ejections impact Earth and other planets, and can prove dangerous to ...

Proxima Centauri b is the closest known exoplanet to our solar system that is thought to be within the habitable zone of its star.

Several planets stand still in the sky, Titan’s shadow transits Saturn, and Venus gives Taurus a second eye in the sky this ...

The icy traveler, called 3I/ATLAS or Comet ATLAS, was discovered on July 1 by the NASA -funded ATLAS survey telescope in Río Hurtado, Chile. This enormous space snowball came from the direction of the ...

Astronomers have confirmed the discovery of a third interstellar object visiting our solar system, and it’s already sparking ...

We measure the extremely long distances between things in space by light years. A light year is the distance that light travels in one Earth year. Light travels at about 300,000 kilometres per second.

Emily Kwong and Regina Barber of NPR's Short Wave talk about a comet visiting from interstellar space, caterpillars that eat ...