Scientists have recently unveiled a remarkable discovery in the outer reaches of our solar system: a space fossil located 4 billion miles past Pluto, covered in unidentified organic molecules. This ...

The space probe began making discoveries even before today's flyby. — -- Three billion miles and nearly ten years of travel led up to the moment NASA's New Horizons probe zoomed past Pluto today, ...

Today, the dwarf planet Pluto orbits the sun from the edge of our solar system and its surface temperature is an inhospitable negative 378 to negative 396 degrees Fahrenheit. But a new study suggests ...