Exoplanet hunters Christopher Watson and Annelies Mortier explain the long search for a 'twin Earth' capable of sustaining ...

Mercury is tiny, barely bigger than the Moon. Its metallic core makes up 70% of the planet’s mass, vastly exceeding Earth’s 32% and Mars ’ 25%. It’s unlikely that the core actually formed like this.

A new study suggests yet another theory for a possible extra planet in our solar system, likely of a size between Mercury and ...

A study led by Howard Chen looks to explain what NASA space telescopes are missing in the search for life beyond Earth.

A recent theory has emerged suggesting that the answer to Mercury’s unusually large metallic core may lie in the early history of our solar system. This theory proposes that a soft collision between ...

On August 24, 2006, our solar system lost a planet. It wasn't by cataclysmic destruction, but rather by the vote of the International Astronomical Union, which declared that Pluto, considered the ...

It’s especially puzzling since Venus is a terrestrial world much like Earth, so much so that it’s considered to be our planet ...

Scientists trying to work out whether a star exploded and the resulting debris crashed into Earth 10 million years ago may be one step closer to solving the mystery. They discovered an unusual amount ...

NASA’s Parker Solar Probe has once again made history by achieving a speed that is almost unimaginable. During its recent journey through the Sun’s outer atmosphere, known as the corona, the ...

A conversation with Thea Riofrancos about her new book Extraction and the hidden cost and obscured history of the capitalist push to monetize the energy transition.

Forty-three years ago, in March 1982, humanity received its last direct visual postcard from the surface of Venus.