Thursday, October 6, 2016

Newscenter Update: Hubble Detects Giant 'Cannonballs' Shooting from Star

October 6, 2016
Artist's Illustration of Scenario for Plasma Ejections from V Hydrae Artists' concept
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Hubble Detects Giant 'Cannonballs' Shooting from Star

Great balls of fire! The Hubble Space Telescope has detected superhot blobs of gas, each twice as massive as the planet Mars, being ejected near a dying star. The plasma balls are zooming so fast through space that they would travel from Earth to the moon in 30 minutes. This stellar "cannon fire" has continued once every 8.5 years for at least the past 400 years, astronomers estimate. The fireballs present a puzzle to astronomers because the ejected material could not have been shot out by the host star, called V Hydrae. The star is a bloated red giant, residing 1,200 light-years away, which has probably shed at least half of its mass into space during its death throes.

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