Eris was discovered. It was considered the largest known dwarf planet in the solar system until a year later when Pluto was ...

The best time to witness the celestial event will be just after sunset starting Jan. 10. A meteor shower will also be visible ...

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

Venus will pass to the north of the much-fainter bluish star Regulus (in Leo, the Lion) on the morning of Sept. 19; the planet and star will appear low in the east-northeast predawn sky, separated by ...

On January 5, 2005, astronomers at NASA discovered Eris, the second-largest dwarf planet in the solar system. Eris is just slightly smaller than Pluto, and it orbits the sun about three times farther ...

Beyond Neptune lies the Kuiper Belt, a vast region of icy bodies offering crucial insights into the solar system’s formation.

Some stargazers are calling it a planetary parade: Every other planet in our solar system can be seen in the sky tonight.

19, 2024 — Scientists have unveiled groundbreaking research on the origins of lunar water, offering insights that could reshape our understanding of the Earth-Moon system and the broader solar ...

Happy New Year and happy perihelion day! Earth is closest to the sun today at just 91,406,000 miles (1.55 million miles ...

Some 2,600 light-years from our own Solar System dwells one of the most peculiar planetary systems in the entire galaxy.

The presence of a North Pole star is a coincidence that has saved lives and perhaps changed history, but is it shared across ...

This January, the night sky offers a stunning display featuring the Quadrantid meteor shower and a rare alignment of four bright planets visible in a single view. Witness Mars at opposition, shining ...