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Our Glaciers: Then and Now activity kit helps you see the changes taking place in glaciers around the world. See all our activity kits and classroom activities.

Rigel - Bluish-white Supergiant


Click on image for full size

What's in a Name: Arabic for "foot"
Claim to Fame: One of the galaxy's brightest stars. Apparent visual magnitude = 0.1
Type of Star: Brilliant bluish-white Supergiant (B8 1a Spectral Type)
How Far Away: 900 light years away (250 parsecs?)
How Big: 30 times the sun's diameter
How Bright: 55,000 times the sun's luminosity (Absolute visual magnitude = - 6.8)
Where to View: Brightest star in Orion (Star Map).
When to View:December through March from Northern middle latitudes

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Our online store includes fun classroom activities for you and your students. Issues of NESTA's quarterly journal, The Earth Scientist are also full of classroom activities on different topics in Earth and space science!

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part by the National Science Foundation and NASA, our Founding Partners (the American Geophysical Union and American Geosciences Institute) as well as through Institutional, Contributing, and Affiliate Partners, individual memberships and generous donors. Thank you for your support! NASA AGU AGI NSF