Stardate Chabot
By the Numbers
1883
Year that Leah, a refracting telescope, was built and given to the Oakland observatory by hydraulic engineer Anthony Chabot.10,000
Number of people who looked through Leah in 1910 to see Halley’s Comet.150,000
Number of people who visit the center annually; one-third of those come in school groups.2.44
Distance in billions of light-years to the farthest object visible from the observatory, 3C 273, a quasar in theVirgo constellation.
For information about Chabot Space and Science Center events, visit www.chabotspace.org.

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