Donna Strickland, Cynthia Kenyon, Katrin Amunts, Sara Seager and Jennifer Doudna

Newsround takes a look at the achievements of five women who have well and truly left their mark in science on the International Day of Women and Girls in Science.

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A blue gas giant with rings, two moons orbit. One looks like Earth but not. The other, Mars.

Mary Halton

Science reporter, BBC News

Distant moons may be the most plentiful habitats in the galaxy

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Nasa's Tess: Planet-hunting satellite lifts off
Nasa's Transiting Exoplanet Survey Satellite (Tess) searches for new planets.