Fluctuating levels of radioactive iron-60 suggest the solar system recently entered a cosmic cloud.
A section of ice core extracted from Antarctica. (Alfred Wegener Institute/Esther Horvath) This glittering spaceship Earth ...
A study published May 13 in Physical Review Letters has confirmed that radioactive iron forged inside an exploding star has ...
Robots, they’re just like us—fascinated by the skies above them and the mysteries they hold. And now, NASA has revealed that its Mars Perseverance rover might have spotted a mysterious visitor from ...