Olsen

/ ˈəʊlsən /

noun

1. Mary-Kate and Ashley (ˈæʃlɪ). born 1986, US twin juvenile act who became famous sharing a role in the sitcom Full House (1987–95); now known for their videos, CDs, and numerous branded products

Example Sentences

"The atmosphere inside the polar vortex, from near the surface to about 30 kilometers high, is characterized by extreme cold temperatures, about 40 degrees Celsius colder than outside the vortex," said Dr. Kevin Olsen of the University of Oxford, who presented the results at the EPSC-DPS2025 Joint Meeting in Helsinki.

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"Ozone is a very important gas on Mars -- it's a very reactive form of oxygen and tells us how fast chemistry is happening in the atmosphere," said Olsen.

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"Because winters at Mars' north pole experience total darkness, like on Earth, they are very hard to study," says Olsen.

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Olsen works with ESA's ExoMars Trace Gas Orbiter that is in orbit around Mars.

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For this, Olsen turned to the Mars Climate Sounder instrument on NASA's Mars Reconnaissance Orbiter to measure the extent of the vortex via temperature measurements.

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