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Nashville Annual Meeting ABSTRACTS DUE October 3rd

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2017 Annual Campaign

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NEW Exoplanet CHOICE Course

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Announcing the Candidates for 2017 AAVSO Council Elections!

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I, Science:

citizen astronomers revolutionizing astronomy

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News Archives

Variable Star Observations in Database:

34,001,779 and Counting ...
Last Observation Received:

1 min 43 sec ago by DJAE - Jarosław Dygos (PL)

RHO CAS   Aug 3.8993   4.52Vis.   

Plot RHO CAS light curve

 
 

Stellar News Feed

Shocking discovery explains powerful novae

Explaining shocks in novae: As the explosion begins, it ejects a cooler, slower wave of gaseous material, relatively speaking. Behind it, though, is a hot, fast wave speeding right behind it. The collision of the two ejections produces a shockwave, which results in a spectacular explosion of heat and light. “The bigger the shock, the brighter the nova,” Chomiuk said. “We believe it’s the speed of the second wave that influences the explosion.”

Submitted by stellakafka on Tue, 09/05/2017 - 10:32

Scientists Recover Nova First Spotted 600 Years Ago by Korean Astrologers

Using archival data, scientists recovered a nova first discovered by Korean Astrologers in March 11, 1437.

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Submitted by stellakafka on Thu, 08/31/2017 - 13:42

Variability discovered in the the Seven Sisters

Detailed studies of the seven brightest stars in the Pleiades cluster with the Kepler satellite, have uncovered unknown variability modes in the “Seven Sisters”.

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Submitted by stellakafka on Mon, 08/28/2017 - 10:13

Antares reconstructed: Image of a Star’s Surface and Atmosphere

Using ESO’s Very Large Telescope Interferometer astronomers have constructed the most detailed image ever of a star — the red supergiant star Antares. They have also made the first map of the velocities of material in the atmosphere of a star other than the Sun, revealing unexpected turbulence in Antares’s huge extended atmosphere...

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Submitted by stellakafka on Thu, 08/24/2017 - 14:43

The sun’s core rotates four times faster than its surface

The sun’s core rotates nearly four times faster than the sun’s surface, according to new findings by an international team of astronomers. Scientists had assumed the core was rotating like a merry-go-round at about the same speed as the surface.

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Submitted by stellakafka on Tue, 08/01/2017 - 09:29

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