Oak Ridge Today

Physics professor to give sun-Earth astronomy talk at Grove on Wednesday

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High Places Community Church

The Grove Theater at High Places Community Church is pictured above.

An adjunct physics professor in east Tennessee will give a basic astronomy talk in Oak Ridge on Wednesday that focuses on “Selected Topics on the Sun-Earth Connection.”

John C. Mannone will give his talk to the ORION astronomy club at the Grove Theater at 7 p.m. Wednesday.

“Emphasis will be placed on the role of magnetic fields in the formation of our sun, the nature of sunspots, and their role in solar and terrestrial weather,” a press release said. [Read more…]

Stargaze at Roane State Observatory on Saturday, Sunday

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Roane State Community College’s Tamke-Allan Observatory will have its first public stargaze of the winter season at 7:30 p.m. today.

Highlights will include a general astronomy presentation at 8 p.m., followed by a guest lecture on “Buying Your Christmas Telescope.” Following the lectures, there will be full evening of telescopic viewing. The TAOAS student astronomy club will be assisting amateur astronomers.

The Sunday sunrise at the observatory near Rockwood will occur at about 7:02 a.m., and the moon will rise two minutes later. [Read more…]

UT professor helps discover near-Earth asteroid really a comet

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Don Quixote Orbit

This image displays Don Quixote’s orbit. (Image courtesy University of Tennessee)

KNOXVILLE—Some things are not always what they seem—even in space. For 30 years, scientists believed a large near-Earth object was an asteroid. Now, an international team including Joshua Emery, assistant professor of earth and planetary sciences at the University of Tennessee in Knoxville, has discovered it is actually a comet.

Called 3552 Don Quixote, the body is the third largest near-Earth object—mostly rocky bodies, or asteroids, that orbit the sun in the vicinity of Earth. About 5 percent of near-Earth objects are thought to be “dead” comets that have shed all the water and carbon dioxide in the form of ice that give them their coma—a cloud surrounding the comet nucleus—and tail. [Read more…]