Letter

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225 published items.

'Tracking' solid carbon dioxide on the Moon
Space science

'Tracking' solid carbon dioxide on the Moon

A new study published in the journal Geophysical Research Letters (PDF) by the Institute of Planetary Sciences and UCLA has confirmed that the Moon's cold trap of carbon…

November 20, 2021
Why does the mouth make sounds?
Discover science

Why does the mouth make sounds?

People have many ways to communicate, such as writing letters, sending messages, drawing pictures, sending emoticons or using their hands to express through sign languag…

February 4, 2020