Mars may have once possessed an ocean at least as large as Earth's Arctic Ocean, a new study suggests. Previous research suggested rivers and seas once existed on Mars, raising the question of whether ...

It was the year 1961 when two helicopter pilot lieutenants, Don Roe and John Hickey, were flying over the western end of ...

When it comes to humanity, Earth is considered humans’ original birthplace. But a new radical theory not only upends this long-standing view about the humans’ origin but also deepens ...

Earth has been around for 4.543 billion years. At numerous times during that long history, our planet has shared itself with the rest of the Solar System, particularly with our immediate neighbors. Sc ...

Recent high-resolution imaging of Mars has unveiled deep ‘scratches’ and craters that suggest the Red Planet once experienced an ice age. These geological features, which include eroded valleys and ...

An international team of researchers has discovered an unusual iron sulfate on Mars, which may turn out to be a previously unknown mineral. The compound was found in ancient sulfate deposits near the ...

Scientists studying Mars may have uncovered a brand-new mineral hidden in the planet’s ancient sulfate deposits. By combining laboratory experiments with orbital data, researchers identified an ...