Mercury reaches its greatest elongation, 26 degrees east of the sun on July 4. From latitude 40 degrees north, the ...

Mercury is the month's highlight, reaching greatest elongation July 4. Also on show in the Southern Hemisphere: Mars, Saturn, ...

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For the first time, JWST has discovered an exoplanet through direct imaging, revealing TWA 7 b, a Saturn-mass world.

From a bar in the clouds to finding more water from the Moon, outer space is constantly surprising us. A vast universe Think ...

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).

Have you ever wondered how many stars you can see at night? From a perfect dark sky location, free from any light pollution, a person with excellent vision may observe a few thousand stars in the sky ...

But as products of the solar system, we also could see ourselves as Bennu brothers, Psyche sisters, comet cousins—kin to the asteroids and comets that chronicle our deepest histories.

By Jacopo Prisco, CNN (CNN) — An accidental discovery might change how we think about one of the most mysterious structures in our solar system. The Oort Cloud, a large expanse of icy bodies ...

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.

A possible new dwarf planet has been discovered at the edge of our solar system, so far-flung that it takes around 25,000 years to complete one orbit around the sun. The object, known as 2017 ...