Holding Pieces of the Moon and Mars on Earth

Sarah Hörst, an Assistant Prof of Planetary Science at Johns Hopkins University, recently got to hold a piece of the Moon and Mars in her hand and shared her excitement on Twitter:

For those curious, Sarah also took time to answer some of the most common questions:

– The black one is the Martian one, the gray one is the moon
– The martian one landed on Earth after something smacked into Mars and sent rocks flying through space and all the way to Earth!
– They were able to tell it was from Mars by the rock’s chemical composition and isotopes
– You can read more about the Martian meteorite here
– The two rocks now have their own Twitter account

Photograph by Sarah Hörst


Photograph by Sarah Hörst

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