Articles by Kim Ann Zimmermann, Space.com Contributor

Kim Ann Zimmermann is a contributor to Space.com and sister site Live Science, writing mainly evergreen reference articles that provide background on myriad scientific topics, like the constellations, astronauts, climate, culture and medicine. Her work can also be found at Business News Daily and KM World. She holds a bachelor’s degree in communications from Glassboro State College.

Articles by: Kim Ann Zimmermann

Jupiter’s moon Io is the most volcanically active world in the solar system. This high-resolution image of Jupiter’s fifth moon was captured by NASA’s Galileo spacecraft and was published on 18, Dec. 1997.

Io: A guide to Jupiter's volcanic moon

By Daisy Dobrijevic last updated 26 October 22

Reference Io is Jupiter's fifth moon and its third-largest. It is the most volcanically active body in the solar system.

The Orion Constellation is a familiar sight around the world.

Orion Constellation: Facts, location and stars of the hunter

By Kim Ann Zimmermann, Daisy Dobrijevic last updated 25 November 21

Reference The Orion Constellation — named after the hunter in Greek mythology — is found on the celestial equator and is a prominent constellation in the night sky.

Aries Constellation: Facts About the Ram

By Kim Ann Zimmermann published 4 March 19

This dim constellation wasn't defined until 1930.

Gemini Constellation: Facts About the Twins

By Kim Ann Zimmermann published 19 February 19

The constellation Gemini is easy to spot in the northeastern sky.

Pegasus Constellation: Facts & Notable Features

By Kim Ann Zimmermann published 9 November 18

Pegasus has some interesting galaxies and deep-space objects.

Two of the very best star clusters for skywatchers are high in our evening sky and toward the south at around 8 p.m. EST (0100 GMT). You can easily locate them by using the famous three-star belt of the constellation Orion, the Mighty Hunter.

Taurus Constellation: Facts About the Bull

By Kim Ann Zimmermann published 8 November 18

The bull is hard to miss as it charges through the northern winter sky. It's one of the most prominent and visible of all of the constellations.

Pisces Constellation: Facts About the Fishes

By Kim Ann Zimmermann published 22 January 18

Pisces is one of the largest constellations, and also one of the faintest.

Sally Ride: First American Woman in Space

By Kim Ann Zimmermann published 19 January 18

Sally Ride was the first American woman to go into space.

Giovanni Cassini Biography

By Kim Ann Zimmermann published 28 September 17

Astronomer Giovanni Cassini discovered four of Saturn's moons, determined the distance from Earth to Mars and made successful measurements of longitude.