Oxygen, the colorless and odorless gas that is essential to the survival of humans and other living organisms, is estimated to make up around 21% of Earth's atmosphere. While the primary properties of ...
Smithsonian Magazine on MSN
Exoplanet Discoveries Pass the 6,000 Mark, Shedding Light on How Our Solar System Compares to the Rest of the Universe
The rate of finding these distant worlds has recently increased, with astronomers scrambling to accommodate the data ...
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