New research suggests a comet explosion helped cause ice age extinctions, sudden cooling, and the loss of early human cultures.

The small, icy visitor now racing away from the inner solar system is not just another comet. It is an interstellar object, ...

Astronomers tracking 3I/ATLAS, the third confirmed interstellar object ever observed, say new measurements of its water loss ...

Interstellar comet 3I/ATLAS reveals ancient secrets and strange chemistry as the largest object of its kind ever tracked.

As this interstellar object approached its closest point to Earth, a massive radio telescope attempted to sniff out a ...

In no particular order, Bob McDonald reviews 10 of the most fascinating accomplishments and noteworthy science news events of ...

The moon and sun share top billing in 2026. Kicking off the year’s cosmic wonders is the moon, drawing the first astronauts ...

Planetary alignments, a total lunar eclipse, and meteor showers are highlights to look for in the coming year.

The new year has arrived, and the Quadrantid meteor shower is coming in hot. Here’s how to see this often-spectacular shower ...

Instead of search-as-a-box, Comet builds the “agent” into the browsing flow itself. Agent is just AI-speak for a tool that ...

From signs of life on Mars to an interstellar visitor and weakening dark energy, 2025 reshaped space science, raising the ...