Earth’s sister planet reaches greatest western elongation and dichotomy as the waxing Moon slides along the ecliptic in the ...

A newly identified dwarf planet, named 2017 OF201, has been discovered in the distant outer reaches of the solar system.

The CNSA said the Tianwen 2 mission is expected to accomplish multiple objectives through a single expedition, including the ...

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system ...

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...

A recent study has cast a concerning spotlight on a previously underestimated celestial threat: asteroids co-orbiting Venus.

Scientists warn that over the next five billion years, there’s a tiny chance Earth could be flung from the solar system by a ...

From imaging every point on the planet daily to leveraging AI and hyperspectral data, Ashley unpacks Planet’s mission to make ...

Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

Astronomers are using data from the recently decommissioned star-mapping satellite to help determine masses and more accurate ...