Mercury reaches its point of greatest eastern elongation on Friday (July 4), presenting an excellent opportunity to spot the ...

They’re not a perfect match, but it’s way too hot on the first planet for us to hop over and confirm for ourselves.

Mercury is the smallest planet in our solar system. Mercury is a little more than one-third the width of Earth and has an equatorial diameter of about 3,032 miles (4,880 kilometres).

Among the planets, moons are more common in the outer reaches of the solar system. Mercury and Venus are moon-free, Mars has two small moons, and Earth has just one.

A new observatory perched high in the Chilean Andes is about to blow the lid off our solar system—and scientists say it’s going to be like switching from a black-and-white TV to 4K color.

Millions of new solar system objects to be found and “filmed in technicolour” – new studies predict 4 June, 2025 A group of astronomers from across the globe, led by Queen’s University Belfast, have ...