Mars, which will appear as a reddish dot, will be the highest in the sky, located above the southern horizon in the ...

Before Apollo astronauts set foot upon the moon, much remained unknown about the lunar surface. While most scientists ...

The ripples suggest that the lake was free of ice at one point.

Neptune is way, way out there, orbiting the Sun some 2.8 billion miles away. That’s likely why a new analysis of some old photos of the ice giant have just revealed something a bit funny: We’ve been ...

"The data from the termination shock encounter will be a treasure trove for space physicists worldwide who are eager to ...

On the 95th anniversary of its discovery, Pluto remains one of the most beloved and enigmatic worlds in our solar system, ...

Saturn, Venus, Neptune, Uranus, Jupiter, Mars and Mercury will be visible in an uncommon planetary alignment this month.

“New Horizons shattered a major paradigm of planetary science,” says Alan Stern, the mission’s principal investigator. “Pluto ...

"Pale Blue Dot" – one of the last photos taken by Voyager 1 – is still the most distant image of the Earth. Astronomer Carl ...

Feb. 18 marks the 95th anniversary of the discovery of our outermost planet-not-planet. Here's what to know about the short ...

Trans-Neptunian objects (TNOs) are icy bodies that vary widely in size, from large dwarf planets like Pluto and Eris—each ...

In his book, Sagan wrote: "The Earth is the only world known so far to harbor life. There is nowhere else, at least in the near future, to which our species could migrate. Visit, yes. Settle, not yet.