Earth" and a massive outer planet, revealing insights into extreme planetary evolution. An international research team, led ...

Venus and Earth, although they've taken two dramatically different climatic roads, are considered sibling planets. They're ...

The search for planets beyond our solar system has taken an exciting leap forward, thanks to advancements in space missions ...

The innermost Earth-like planet in the famous TRAPPIST-1 system might be capable of supporting a thick atmosphere after all, ...

NASA has arrived at two ways of returning samples collected on Mars to Earth. Now, the agency will test the options to see if ...

January's sky brings a planet parade, Mars opposition, and the Quadrantid meteor shower. Enjoy Venus and Saturn's close ...

When you look up in the night sky, our moon is unmissable.Just like Earth, it's round and has a solid, rocky surface. But is our moon actually a planet? The answer is technically no — at least ...