Topic: Edmond Halley
All Content
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What the transit of Venus tells us about alien planets (+video)
The transit of Venus will help astronomers on the hunt for planets outside of our solar system.
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Transit of Venus: Early 'tape measure' for size of our solar system (+video)
The next transit of Venus occurs June 5. Astronomers once used the transit of Venus across the sun to come up with the 'astronomical unit' – the distance from Earth to our sun.
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Orionid meteor shower from Halley's Comet has big finish Thursday night
Orionid meteor shower will conclude Thursday night as the Earth finishes traversing through the debris field that follows Halley's Comet.
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Did the ancient Greeks spot Halley's Comet?
Halley's Comet visited our inner solar system in 466 BC, where it was probably viewed by ancient Greek skywatchers.
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Hubble Telescope turns 20! Here's 10 space targets you can spot without the Hubble.
Want to celebrate the 'birthday' of the Hubble Telescope? Here's 10 things that amateur astronomers can find (even without the Hubble Telescope).
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