Starlust on MSN
Stardust trapped in Antarctic ice reveal our solar system's journey through a cosmic cloud
Fluctuating levels of radioactive iron-60 suggest the solar system recently entered a cosmic cloud.
When you think of outer space, you're likely picturing stars, planets and moons. But much of space is filled with clouds of ...
Ancient volcanoes in the Arctic may have trapped Earth in repeated "Snowball Earth" freezes for 56 million years.
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