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Kathryn D. Sullivan

Kathryn D. Sullivan (born 1951) is an American geologist and oceanographer, and a former government official and NASA astronaut, who flew on three Space Shuttle missions. Sullivan was one of six women selected in NASA Astronaut Group 8, the first group to include women. During her first mission, STS-41-G, Sullivan performed the first spacewalk by an American woman. On her second, STS-31, she helped deploy the Hubble Space Telescope. On the third, STS-45, she served as Payload Commander on the first Spacelab mission dedicated to NASA's Mission to Planet Earth. Sullivan was Under Secretary of Commerce for Oceans and Atmosphere and Administrator of the National Oceanic and Atmospheric Administration from 2014 to 2017. On June 7, 2020, Sullivan became the first woman to reach the Challenger Deep in the Mariana Trench, the deepest part of the Earth's oceans. In September 2021, President Joe Biden appointed her to the President's Council of Advisors on Science and Technology. (Full article...)

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Suzanna Randall
Suzanna Randall

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Hénoc Muamba in July 2022
Hénoc Muamba

On this day

November 23: Labor Thanksgiving Day in Japan

Edwin Hubble
Edwin Hubble
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Today's featured picture

Cephalanthus occidentalis

Cephalanthus occidentalis is a species of flowering plant in the family Rubiaceae. It is a deciduous shrub or small tree that averages 1 to 3 m (3.3 to 9.8 ft) in height, but can reach 6 m (20 ft). The flowers are arranged in a dense spherical inflorescence 2 to 3.5 cm (0.79 to 1.38 in) in diameter on a short peduncle. Each flower has a fused white to pale yellow four-lobed corolla forming a long slender tube connecting to the sepals. The stigma protrudes slightly from the corolla. The fruit is a spherical cluster of achenes (nutlets). This C. occidentalis plant, of the occidentalis variety, was photographed flowering in Point Pelee National Park in Ontario, Canada.

Photograph credit: The Cosmonaut

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