Earth's oceans may have been green for billions of years until the first photosynthetic organisms flooded our atmosphere with ...

Odds of Earth’s potential impact with ‘city-killer’ asteroid 2024 YR4 have risen to an all-time high. The exact size of the ...

The close encounter was "a historic first of its type for a Japanese private, commercial lunar lander," according to ispace. It gave Resilience a fuel-saving gravity assist, changing the lander's ...

More pocked with craters than any other object in our solar system, Jupiter's outermost and second-biggest Galilean moon, Callisto, appears geologically unremarkable. In the 1990s, however, NASA's ...

Saturn’s rings are an arresting sight even through modest telescopes. The planet is made mostly of hydrogen and helium whereas the rings are billions of pieces of mostly bright-white water ice and ...

NASA has increased the chances of asteroid 2024 YR4 hitting Earth in 2032 to 1 in 32, or 3.1%, up from 1 in 42 as reported in ...

Perseverance's drives over the last few weeks have doubled back several times. Why such an unconventional route? Team ...

High-pressure experiments generated the first direct observation of plastic ice, which has qualities of both crystalline ice and liquid water.

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

The total lunar eclipse coming March 13-14 will last for hours and totality will be visible for more than 60 minutes.

Some cyanobacteria have pigments that specialise in harvesting green light to power their photosynthesis, which may be an evolutionary adaptation to a time when the oceans were iron-rich and green-tin ...