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National Science Foundation

Bright light appearing behind the horizon of a planet. Ask a scientist: Where can I see the eclipse in totality?
36 seconds
Grade Level: 7 - 12
Person in lab coat, gloves, and mask moving a large metal machine that is place above other complex metal machinery. Caption: Also key is state-of-the-art optical and laser technology:
20 minutes 11 seconds
Grade Level: 9 - 12