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Space

Interstellar comet Borisov has an unexpected amount of carbon monoxide

The second known visitor from outside the solar system has three times as much CO relative to H2O than any comet seen in the inner solar system.

Planetary Science

Unlike Earth, the gases in Venus’ atmosphere aren’t uniformly mixed

Measurements of Venus’ atmospheric nitrogen show that a planet’s upper atmosphere doesn’t necessarily match the lower atmosphere.

Life

Toxin-producing bacteria can make this newt deadly

Bacteria living on the skin of some rough-skinned newts produce tetrodotoxin, a paralytic chemical also found in pufferfish.

Physics

Gravitational waves have revealed the first unevenly sized black hole pair

For the first time, LIGO and Virgo scientists spotted gravitational waves produced when one big black hole merged with a smaller one.